Unit 1 Review

A city has 5 new houses for every 8 old houses. If there are 25 new houses in the city, how many old houses are there?

• 45

• 42

• 38

• 40

Margaret is making strawberry milkshakes for the kids party. The recipe calls for of a 1/3 cup of strawberry syrup to make 12 milkshakes. How many cups of strawberry syrup are needed to make 144 milkshakes.?

• 48

• 4

• 12

• 5

Most dietitians recommend that adults consume 20 to 30 percent of their daily caloric intake in protein. Based on this recommendation, what is the minimum amount of calories from protein an adult should consume from a 1,700 calorie diet?

• 510

• 425

• 850

• 340

Jake is the starting quarterback on his school's football team. He has completed 37 of his 61 passes this season. Which of the following values is closest to his percentage of pass completions this season?

• 64%

• 23%

• 61%

• 37%

Sarah is a news anchor. She works 60 hours a week, but she is only on-air about 18% of those hours. Approximately how many hours is Sarah on-air each week?

• 14

• 8

• 11

• 5

Michael sold 2 flowers in 4 hours, 3 flowers in 6 hours, 4 flowers in 8 hours, and 5 flowers in 10 hours. Which statement correctly describes this situation?

• The given situation represents a proportional relationship because the graph of the given data does not form a straight line through the origin.

• The given situation does not represent a proportional relationship because the graph of the given data forms a straight line through the origin.

• The given situation does not represent a proportional relationship because the graph of the given data does not form a straight line through the origin.

• The given situation represents a proportional relationship because the graph of the given data forms a straight line through the origin.

John paints 2 portraits in 8 hours, 3 portraits in 12 hours, and 5 portraits in 20 hours. Which statement correctly describes this situation?

• The given situation represents a proportional relationship because the graph of the given data forms a straight line through the origin.

• The given situation does not represent a proportional relationship because the graph of the given data does not form a straight line through the origin.

• The given situation represents a proportional relationship because the graph of the given data does not form a straight line through the origin.

• The given situation does not represent a proportional relationship because the graph of the given data forms a straight line through the origin.

The cost of one pencil is $3, and the total cost of three pencils is $9. Which of the following is true?

• The number of pencils and the total cost are in a proportional relationship because the cost does not increase with the number of pencils.

• The number of pencils and the total cost are in a proportional relationship because the cost increases with the number of pencils.

• The number of pencils and the total cost are in a proportional relationship because the cost of zero pencils is $0 and it does not increase proportionally with the number of pencils.

• The number of pencils and the total cost are in a proportional relationship because the cost of zero pencils is $0 and each pencil costs $3.

A newborn kitten weighs 3 ounces at birth. After four weeks, it weighs 13 ounces. Which of the following is true?

• The kitten's age and weight are not in a proportional relationship because the weight of the kitten increases by 2.5 ounces every week.

• The kitten's age and weight are not in a proportional relationship because the kitten does not weigh zero ounces at birth.

• The kitten's age and weight are not in a proportional relationship because the weight of the kitten increases over time.

• The kitten's age and weight are not in a proportional relationship because the difference in the weight of the kitten after four weeks is 10 ounces.

In a science experiment, Mathilda and Jonathan observed how a spring's length changed when they hung blocks of different weights from its end. They noted the weight in pounds and the increase in the spring's length in inches. The graph shows the data that they recorded. What does the point (1, 0.8) on the graph represent?

• The length of the spring is 1 inch when a block weighing 0.8 pounds is suspended from it.

• The length of the spring increases by 1 inch each time the weight is increased by 0.8 pounds.

• The length of the spring is 0.8 inches when a block weighing 1 pound is suspended from it.

• The length of the spring increases by 0.8 inches for each added pound of weight.