Module 1 Review- Math 2

• x = 3.7

• x = 51.8

• x = 28

• x = 3.4

Answer explanation

Cross multiply

then divide

Taylor has a job unpacking boxes and stocking shelves with new merchandise at a local clothing store. She needs to unpack 38 boxes to earn enough money to pay for her summer camp fees. If each box takes the same amount of time, and she can unpack 4 boxes in 3 hours, how long will it take her to unpack 38 boxes?

HINT: boxes on top, hours on bottom cross multiply

• 26 hours

• 28.5 hours

• 30 hours

• 40 hours

Answer explanation

Cross Multiply

Then Divide!

A fruit punch recipe that serves 20 people calls for 32 ounces of pineapple juice and 48 fluid ounces of orange juice. Monique only has 20 ounces of pineapple juice. How much orange juice does she need to maintain the ratio of pineapple juice to orange juice?

• 30 oz

• 40 oz

• 50 oz

• 60 oz

Answer explanation

Set up the proportion to compare pineapple juice and orange juice.

Cross multiply then divide!

A car travels 26 miles on 1 gallon of gas. Jorge drives 130 miles and uses 5 gallons of gas. Are the two situations proportional?

Hint: Set up the ratios and see if they are equivalent.

Miles per Gallon

• Yes, the relationship is proportional because the ratios are equivalent.

• No, the relationship is not proportional because the ratios are not equivalent.

In a survey, the ratio of students who prefer Italian dressing to ranch dressing is 3 to 10. If the number of students who prefer Italian is 45, how many students prefer ranch?

• 150 students

• 100 students

• 3 students

• 300 students

How many cups of milk are in a 4 pint bottle?

• 4 cups

• 6 cups

• 8 cups

• 12 cups

Answer explanation

Set up the ratio for pints to cups. Look at the reference sheet to find this information.

Set up the proportion.

Cross Multiply then divide.

What letter stands for "constant of proportionality"?

• y

• x

• b

• k

How do you find k?

• y=kx

• x ⋅ y

• $12

• $1.50

• $3

• $1

Answer explanation

y divided by x

Price divided by slices

A proportional relationship can be written as an equation in the form ____ = _____ _____

• y = k+x

• y = k-x

• y = kx