Proportions and Constant of Proportionality

A cake recipe calls for 1.5 cups of milk and 3 cups of flour. Seth made a mistake and used 5 cups of flour. How many cups of milk should he use to keep the proportions correct?

• 2.5 cups milk

• 1.75 cups milk

• 2 cups flour

• 2.25 cups milk

Which of these describes the unit rate?

• a unit of measure

• a fraction with a numerator of one

• a fraction with a denominator of one

• a proportion

Find the unit rate of 40 meters in 16 seconds

• 0.4 meters per second

• 0.4 seconds per meter

• 2.5 meters per second

• 640 meters per second

Find the unit rate of $7.96 for 5 pounds of jolly ranchers. 

• $0.63 per pound

• 1.59 pounds

• $1.59 per pound

At a grocery store, three-dozen cookies cost $9.00. What would be the cost of one cookie?

• $0.25

• $1.25

• $0.50

• $0.33

Simplify the complex fraction.

• 18

• 1/18

• 9/72

• 1/8

• A
• B
• C
• D

• 3 to 4
• 20 to 15
• 4 to 3
• 1 to 2

Is this table proportional?

• Yes

• No

• 110 miles
• 145 miles
• 255 miles
• 365 miles