7th Grade Semester Review

The two figures are proportional. Find the value of x.

• 12

• 24

• 30

• 40

The scale of a model train is 1 inch to 13.5 feet. One of the cars of the model train is 5 inches long. What is the length, in feet, of the actual train car?

• 67.5

• 32.4

• 14.5

• 2.7

Laurie will draw a scale model of the garden she wants to plant. Her scale will be 1 cm = 2.5 feet. What will be the actual dimensions of Laurie's garden?

• 1.6 feet by 3.4 feet

• 4 feet by 34 feet

• 8 feet by 34 feet

• 10 feet by 21.25 feet

If 5 pizzas cost $60, how much will 9 pizzas cost?

• $98

• $108

• $110

• $112

A train in Japan can travel 813.5 miles in 5 hours. Find the unit rate in miles per hour.

• 162.7

• 325.4

• 650.8

• 813.5

The graph shows the relationship between the number of people in a group and the total cost of admission for a circus. What point on the graph represents the constant of proportionality?

• (0,0)

• (1,15)

• (15,1)

• (8,20)

You can buy 3 candy bars at the Quick Market for $2.17. How many candy bars can you buy with $17.36?

• 8

• 12

• 16

• 24

The graph shows the amount of protein contained in a certain brand of peanut butter. Which statement describes the meaning of the point (6,30) on the graph?

• 6 grams of protein per tablespoon of peanut butter

• 30 grams of protein per tablespoon of peanut butter

• 6 grams of protein in 30 tablespoons of peanut butter

• 30 grams of protein in 6 tablespoons of peanut butter

This table shows how the cost of Paco's birthday party depends on the number of guests. Determine the cost of having 12 guests at the party.

Guests, x 4 8 12

Cost, y 20 40 ?

• The relationship is not directly proportional

• $60

• $80

• $120

A grocery store sells cashews. The relationship between the mass and cost of cashews is shown in the following graph. Which statements about the graph are true?

• The point (0,0) shows that the cost is $0 for 0 kg of cashews.

• The point (2,60) shows that it cost $2 for 60 kg of cashews.

• The point (2,60) shows that it cost $60 for 2 kg of cashews.

• The constant of proportionality for this graph is 30.