Proportions and Rate of Change

What value of x makes this proportion true?

• 0.6

• 1.96

• 2.25

• 2.94

A dessert recipe calls for cups of milk and makes 5 servings. How many cups of milk are needed for 8 servings?

• 3 1/2 cups

• 4 cups

• 4 1/2 cups

• 7 cups

Anna walked 8 miles in 3 hours. Juan walked 14 miles in 5 hours. Are these rates in proportion?

• Yes, the rates are the same.

• No, Anna's rate per hour is greater than Juan's rate per hour.

• No, Anna's rate per hour is less than Juan's rate per hour.

• Yes, the rates are different.

Matthew can buy an 8-ounce jar of salsa for $2.85 or a 15-ounce jar of salsa for $5.65. Which jar is the best buy and what is the unit rate?

• 8-ounce jar: unit rate $0.25 per ounce

• 15-ounce jar: unit rate $0.34 per ounce

• 8-ounce jar: unit rate $0.36 per ounce

• 15-ounce jar: unit rate $0.38 per ounce

A bakery charges $8.40 for 12 cookies, and $16.80 for 24 cookies. How much does each cookie cost?

• $0.70

• $0.84

• $0.76

• $0.65

Maria works as a florist and worked 15 hours last week and earned $112.50. At that rate, how much will she earn is she works for 10 hours?

• 60

• 66

• 75

• 85

The ratio of boys to girls at Hull Middle School is 3: 2. Which of the following statements is true?

• If there are 900 boys, then there are 600 girls.

• If there are 600 boys, then there are 500 girls.

• If there are 400 boys, then there are 400 girls.

• If there are 300 boys, then there are 600 girls.

Match the term to its definition.

UNIT RATE

• An equation stating that two ratios or rates are equivalent

• A rate that is simplified so that it has a denominator of 1 unit

• a fraction that contains one or more fractions in the numerator, the denominator, or both

Match the Term to its definition:

PROPORTION

• An equation stating that two ratios or rates are equivalent

• a fraction that contains one or more fractions in the numerator, the denominator, or both

• A rate that is simplified so that it has a denominator of 1 unit

Match the term to its definition:

COMPLEX FRACTION

• A rate that is simplified so that it has a denominator of 1 unit

• An equation stating that two ratios or rates are equivalent

• a fraction that contains one or more fractions in the numerator, the denominator, or both