Last month, Mr. Douglas sold 36 of his books. This month, however, he only sold 8 books. What was the percent change in book sales from last month to this month?

A decrease of 77.77%
An increase of 3.5%
A decrease of 3.5%
An increase of 77.77%

Answer:

A decrease of 3.5%

Step-by-step explanation:

since 36-8 is 28, it went down a bit so it would be 3.5%

Answer:  A decrease of 77.77%. So the first option.

please help me with this math problem I forgot how to solve it

PLEASE HELP ME!! Usa-testprep!!

A restaurant orders corn tortillas and flour tortillas. The ratio of the number of corn tortillas to the number of flour tortillas is 2 : 3. What is the ratio of the number of flour tortillas to the total number of tortillas?
3 : 8

3 : 5

2 : 8

2 : 5

A cold water faucet can fill the bathtub in 12 minutes, and a hot water faucet can fill the bathtub in 18 minutes. The drain can empty the bathtub in 24 minutes. If both faucets are on and the drain is open, how long would it take to fill the bathtub?

The answer is not 10.3, I dunno why

a six-pack of cake costs $2.09 at this rate,how much will 32 cans cost

Quadrilateral Q’R’S’T is a dilation if quadrilateral QRST, with the origin as the center of dilation.

What appears to be the scale factor used to create this dilation?

4

0.5

2

0.25

Select all the correct answers.
Terry is an up-and-coming florist who specializes in weddings. He uses 5 roses, 3 daisies, and 4 bundles of green filler to make one bouquet. If r is the cost of a rose, d is the cost of a daisy, and f is the cost of a bundle of green filler, which expression represents the cost for making 75 bouquets?
75r +75d + 75f + 12
(5r + 3d + 4f) + 75
75(5r) + 75(3d) + 75(4f)
75(5r + 3d + 4f)

In a salad recipe, the ratio of carrots to cucumbers must remain constant. The table below shows some possible combinations of carrots and cucumbers.

k + 9 = 17

What does k value?
k=8
k=9
k=17
k=26

Solve and then tell how many solutions there are. 4v – 13 – 10v = 12 – 24v + 5 + 18v

Show step by step In a day there are 86,400 seconds. Write this number in scientific notation.

Last week, a chocolate shop sold 4 7/8 ounces of white chocolate. It sold 3 times as much milk chocolate as white chocolate. How many ounces of milk chocolate did the shop sell?

Please help! (I'll give brainliest to the first right answer)

How do I do Distance Formula? Here is the equation ( or equations I don't know if it is a equation or 2 different ones) that I need help with
They are late and I need to turn them in [tex]C(-5, -3), D(-4, -2)\\K(8 1/2, 12), L( -63/4, 7 1/2)[/tex]

Melissa did 10 math problems on 3 different days and she did 20 problems on 2 other days. How many problems did she complete in all? Choose the expression that is a correct translation of the problem.
(3 x 2) + (10 x 20)
(3 x 2) x (10 x 20)
(3 x 10) + (2 x 20)
(3 + 2) + (10 + 20)

Melanie and her cousin Grace are arguing about who is the faster swimmer. The distance each can swim in a certain number of minutes is shown in the photo.

A photo of two swimmers is shown. The caption says Grace, three hundred twenty-five meters in five and a half minutes, and Melanie, three hundred meters in five minutes.

Question 1
Part A

How fast does Melanie swim?

Enter the correct answer in the box.

1 of 2
Find the unit rate of speed, which is meters per minute.


meters per minute.
Question 2
Part B

How fast does Grace swim? Round to the nearest tenth, if necessary.

Enter the correct answer in the box.

about
meters per minute.
( I NEED HELP NOW!!!! I WILL GIVE BRAINLIEST AND 25 POINTS!!

What is the simplified form of this expression?

7a2 + 10a − 3a − 2a2

What are the two things that happen to water molecules when heat energy is added to air?

please help i don't understand. will mark brainliest. answer the both questions

Is this right? I chose the last 3. Please read all of them though.

PLEASE HELP WILL GIVE BRAINLIEST!!! DUE TODAY!!! WORTH 50 POINTS!!! :3 Amal is saving for a video game system. Amal earns $250 a week but she saves $210 a week for other expenses. Draw a graph of this situation. If the video game system costs $120, how many weeks will it take before Amal can afford the video game system?

5(−3.4k−7)+(3k+21) find the sum

This is due in 15 minutes and I need help ASAP

A local donut shop sells a dozen donuts for $8.64 . At this rate , how much would 14 donuts cost ?

Which point is not on the graph of the function y = x + 2?

(3, 5)
(6, 8)
(7, 9)
(2, 0)

whats 2+2+2+2+2+2+2 idk know i do but someone wants 200 so ur welcom

The areas of three squares will be used to prove that AQRS is a right triangle.
Which of these shows the dimensions of the three squares that are needed for the proof?
A.2 units by 2 units
4 units by 4 units
10 units by 10 units

B. 6 units by 6 units
8 units by 8 units
10 units by 10 units

C. 6 units by 6 units
8 units by 8 units
14 units by 14 units

D. 12 units by 12 units
16 units by 16 units
20 units by 20 units
Help needed!!!!!

A plant grew 7 inches in 5 months. The plant grows the same amount each month. Use this rate to complete this table.
(Redo since the last photo was all wonky and stuff)​

Mrs. Nygaard’s class has 12 boys and 14 girls. She asked the class members if they prefer a field trip to the local zoo or to an aquarium. She set up a two-way table to summarize the results. Which could describe the row and column headings for Mrs. Nygaard’s table? gender and field trip preference gender and number of students who prefer the aquarium number of boys and number of students who prefer the aquarium number of girls and field trip preference

The two opposite vertices of a square
are (-2, 2) and (1, -1). What are the other two vertices of the square?