Dr. Watson received a $15 gift card to download music for her mp3 player. Each Song costs $1.50. Find the equation that represents the
remaining balance on the gift card after x downloads. What is a suitable domain for this function?

Answers

Answer 1

Answer:

y = -1.50x + 15, Domain is from 0 to 10

Step-by-step explanation:

First, look at the question carefully and highlight all the words that are important. We know that the 15 dollar giftcard is important, and we know that each song costs 1 dollar and 50 cents is important. We will make an equation out of this information. Since she is spending money, the value of X will be negated. She starts out with 15 dollars, so that will be our y-intercept. From this, the equation is y = -1.50x + 15. Next, let's look at the domain. We can see that the question asks for a suitable domain, not the domain of the function. Since she didn't have more than 15 dollars from her gift card, any domain from negative infinity until 0 will be crossed out. The x-intercept of this equation is 10, so any value above 10 will be crossed out since you cannot spend more money than you were given. The domain would now be from 1 to 10.


Related Questions

why is math really hard

Answers

Answer:

Actually it is not hard. It is just the mentallity or attitude that u have towards it. Stop saying and believing that it is hard........just start doing more practice per topic everyday, 2 to 3 sums a day in a topic that u have not understood will do the trick. And above all, believe in yourself and start seeing yourself as a little math genius and never give up trying.

Step-by-step explanation:

Answer:

Math is hard because it wants us to fail.

Step-by-step explanation:

Also someone says that math stands for Mental Abuse To Humans. So...

If f(x) = 4, then x

Answers

Answer:

x=4/f

Step-by-step explanation:

what is the gcf of 12a²,15a³,18a5​

Answers

Answer:

[tex]3a {}^{2} [/tex]

A rectangular yard is enclosed by 100 meters of fencing. The table shows some possible values for the length and width of the yard.

>The area is in square meters<

Length (meters): Width (meters): Area:
10 40 400
20 30 _
25 25 625
35 15 525
40 _ _


1. Complete the table with the missing values

Answers

10 40 400
20 30 600
25 25 625
35 15 525
40 60 2400
I think

Answer:

what did you put for question 2 and 3?

Step-by-step explanation:

2.If the values for length and area are plotted, what would the graph look like?

3.How is the relationship between the length and the area of the rectangle different from other kinds of relationships we’ve seen before?

The volume of a cube is 27 n Superscript 27cubic units. What is the length of one side of the cube?
3 n cubed units
3 n Superscript 9 units
27 n cubed units
27 n Superscript 9 units

Answers

Answer:

B. 3 n[tex]9[/tex]

Step-by-step explanation:

I took the test and got it right.

Answer:

the person above me is correct

Step-by-step explanation:

A survey showed that 4 out of 5 students own a bicycle. Based on this result, how many of the 800 students in a school own a bicycle? Use any strategy to solve.

Answers

Answer:

640 students

Step-by-step explanation:

We are told in the question that 4 out of every 5 students owns a bicycle

This also means , out of every 5 students only 1 does not have bicycle

Then we have a ratio of 4 : 1

This means a fraction of 4/5 students own a bicycle in a school

Based on this result, how many of the 800 students in a school own a bicycle?

This calculated as:

4/5 × 800

= 640 students

Therefore, 640 students out of 800 students own a bicycle

A passenger rode the subway 2 blocks west and then 10 blocks south. If all the blocks are th same length what is the value of the slope of the line where the passengers came from

Answers

Answer:

-10/-2

Step-by-step explanation:

Answer:

-10/-2

Step-by-step explanation:


How would you write -5.6 x 10-3 in standard form?

Answers

Answer:

negative five point six times ten minus three

Step-by-step explanation:

write the number out with letters

Answer:

-0.0056

Step-by-step explanation:

Hope this helped

help pls!!!how to solve it​

Answers

Answer:

q = 5/6

Step-by-step explanation:

First, we distribute.

16q - 10 = 4q

Then, we combine like terms.

-10 = 4q - 16q

-10 = -12q

Finally, we divide -12 on both sides.

5/6 = q, or q = 5/6

Hope this helps ^^

The product of two numbers is 37.03.If one number is 2.3,find the other.​

Answers

Answer:

16.1

Step-by-step explanation:

37.03/2.3 = 16.1

Answer:

[tex]\boxed{\bold{\huge{\boxed{16.1}}}}[/tex]

Step-by-step explanation:

Let the first number be x and the second number be y

So, the condition is:

[tex]x * y = 37.03[/tex]

Given that x = 2.3

[tex]2.3 * y = 37.03[/tex]

Dividing both sides by 2.3

[tex]y = \frac{37.03}{2.3}[/tex]

[tex]y = 16.1[/tex]

0.7 (3s + 4)-1.1s = 7.9

Answers

Answer:

s = 5.1

Step-by-step explanation:

[tex]0.7 (3s + 4)-1.1s = 7.9\\[/tex]

Multiply both sides of the equation by 10

[tex]0.7\left(3s+4\right)\cdot \:10-1.1s\cdot \:10=7.9\cdot \:10\\\\= 7\left(3s+4\right)-11s=79\\[/tex]

Expand

[tex]\mathrm{Expand\:}7\left(3s+4\right)-11s:\\\quad 10s+28[/tex]

Subtract 28 from both sides

[tex]10s+28-28=79-28[/tex]

Simplify

[tex]10s=51[/tex]

Divide both sides of the equation by 10

[tex]\frac{10s}{10}=\frac{51}{10}[/tex]

Simplify

[tex]s=\frac{51}{10}\\\\Decimal = 5.1[/tex]

First multiply 0.7 by (3s+4) to get 2.1s + 2.8 and then add the 1.1s to the 2.1s and that should leave you with 1s+2.8 now you should have 1s + 2.8 = 7.9, you want to take 2.8 from both sides to bring it over to the 7.9 to make it look like 1s = 7.9 - 2.8 so now go ahead and have the 7.9 and the 2.8 subtract so you should end up with 1s = 5.1 so now you want to divide both sides by 1 and the 1s would cancel out into s and the 5.1 stays the same so now you have s = 5.1, you can always check this answer by seeing that it works so here is how you do that. Plug in your number, so you have
0.7 (3 * 5.1+4) - 1.1 * 5.1 = 7.9
here is your verification, 0.7 multiplied by all the numbers in the parentheses (3 * 5.1+4) would get you with 10.71 + 28 and you have - 1.1 * 5.1 = 7.9 so now just add the 10.71 to the 2.8 to get 13.51 and multiply the 1.1 by the 5.1 to get 5.61 and subtract the two to get 7.9 and that’s 7.9 = 7.9 so I hope this was helpful!! ^_^

When Matthew eats pizza, he always eats a whole slice at a time with no bites left over. Which graph best represents this situation?

Answers

Answer:

B

Step-by-step explanation:

i just took the assignment

Answer:

its b

Step-by-step explanation:

i did the assignment

Simplify the following numerical expressions.

Choose from the numbers in parentheses

|-7| - 7 =
<
2 |-7| =
( -7 )^2 =
<
-7^2 =
>
-7 -|-7| =
(-49) (14) (-14) (0) (49)

Answers

Answer:

|-7| - 7 =  0

2 |-7| =  14

( -7 )^2 =  49

-7^2 =  49

-7 -|-7| =  -14

Step-by-step explanation:

What is 12.5×10 to the six power

Answers

Answer:

12500000

Step-by-step explanation:

Answer: the answer is 12500000

Step-by-step explanation:

HELP! this is due today

Answers

Answer:

2cm x 2cm x 2cm

∛8=2

Step-by-step explanation:

2cm x 2cm x 2cm

∛8=2

answers to every blank space is 2

what is the variable in this expression? 9n-2 A)2 B) 9 C) N

Answers

Step-by-step explanation:

The variable is n, which can have different values. 9 is the coefficient of the variable term and -2 is the constant term

Answer:

C)N.

Because variables represent an unknown number.

a metal block has the following dimensions height 2cm length 10cm width 5cm calculate the volume of the block

Answers

Answer:

100cm^3

Step-by-step explanation:

The volume of any cube or cuboid is calculate by simply multiplying the length by the width by the height.

So if our length is 10cm, our width is 5cm and our height is 2cm, then our volume is 10x5x2=100cm^3 (cubic centimeters-unit for volume.)

Hope this helped!

((3 + 3)​ 2​· 3) - 3​ 2

Answers

Answer:

The answer is 4

Step-by-step explanation:

Hope this answeris helpful...

Make me as brainliest...

Over one weekend the fast florist makes 368 deliveries of one dozen roses. Did the fast florist deliver more then or less than 4,000 roses? Explain. That's my question ^ please help

Answers

Answer:

The florist delivered more than 4000 roses

Step-by-step explanation:

One dozen is 12 roses, so the fast florist delivered a total of 368 x 12 = 4416 roses. That is more than 4000 roses, so the answer is More than 4000 roses

XY = 5x, YZ = x, and XY = 25

Answers

Answer:

x=5

Step-by-step explanation:

XY=5x and 25. Therefore, 5x and 25 have the same value. 5 times 5 is 25 so x=5

Answer: 6x=25

Step-by-step explanation:

Evaluate each expression
a. 2: 3 - 4

Answers

-1 it’s just 4-3 but add the negative

3(2x - 8) = 6 ????ii

Answers

Answer: Divide both sides by the numeric factor on the left side, then solve. x=5

Someone please help me on this question!

Answers

Answer:

the measurement of C is 83° because AB = BE so B = A

180° (triangle ABE) - 57°(2) = 66°

180° (line AD) - 66° = 114°

180° (line BC) - 114° = 66° (angle E)

180° (Triangle DCE) - 66° - 31° = 83°

can a pentagon be a cross section of a triangular prism?

Answers

Answer:

No, a pentagon can NOT be a cross-section of a triangular prism.

Step-by-step explanation:

Prisms have a uniform cross-section and are named after their cross-section. Hence, the cross section of a triangular prism is a triangle. The only prism with a pentagon cross-section is a pentagonal prism.

Kaya rented a limousine for prom. The company charges a cleaning fee of $100 and an hourly rate of $45. Her total cost for the night was $437.50. For how many hours did Kaya rent the limousine?

Answers

Answer:

Number of hours= 7.5

Step-by-step explanation:

Giving the following information:

The company charges a cleaning fee of $100 and an hourly rate of $45.

Her total cost for the night was $437.50

First, we need to structure the total cost formula:

Total cost= 100 + 45*x

x= number of hours

437.5= 100 + 45x

337.5/45= x

x= 7.5

Number of hours= 7.5

Answer:

Kaya rented the limo for about 7.5 hours

                  Hope this helps! good luck :)

Secondary School work, find the height of capsule B

Answers

This is the answer in the picture .

Evaluate 7 + (-3x2) for x = 0.
-2
00
04

Answers

Steps to solve:

7 + (3x^2)

~Substitute

7 + 3(0)^2

~Simplify

7 + 3(0)

~Simplify

7 + 0

~Add

7

Best of Luck!

Simplify this expression.
2^5(13 +12)

Answers

Answer:

800

Step-by-step explanation:

You do 2 to the 5 power, which equals 32. Then add 13 and 12 to get 25. Then multiply 32 and 25 to get 800

plssss answer asappp!!

Answers

Answer:

line k

Step-by-step explanation:

SInce line k is the one intersecting line RS.

An athlete goes to the gym to train for 90 minutes each day for as many days as possible. Write an equation that relates the number of days, d, that the athlete spends training if the athlete trains for 540 minutes.

Answers

Answer:

23

Step-by-step explanation:

your answer will be 23
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