Quiz about Chapter 5 OST Review (7th Grade)

Question 1

Angelo drew the two rectangles shown. The second is a scale drawing of the first.

What scale factor did Angelo use to draw the second rectangle?

Accepted Answer

2.5

Answer

3.5

Answer

4

Answer

1.75

Answer

2

Question 2

The table shows the cost for different numbers of song downloads.

Which table shows a proportional relationship?

Accepted Answer

Question 3

A faucet drips $$\frac{2}{3}$$ gallon of water in 10 hours.

Which rate is the unit rate of water dripped per day?

Accepted Answer

$$1\frac{3}{5}$$ gallon per day

Answer

$$\frac{1}{15}$$ gallon per day

Answer

$$\frac{5}{18}$$ gallon per day

Answer

$$6\frac{2}{3}$$ gallon per day

Question 4

What table shows a proportional relationship?

Accepted Answer

Question 5

An energy company graphs the average number of rotations that a windmill makes each minute for 4 minutes.

Which statement describes what the point (1, 12) means in terms of rotations and minutes?

Accepted Answer

A windmill rotates 12 times in 1 minute

Answer

1 rotation occurs every 12 minutes

Answer

$$\frac{1}{12}$$ of a rotation occurs every minute

Answer

A windmill rotates 12 times in 12 minutes

Question 6

The graph shown models the relationship between the distance a car travels and time.

What does the point (60, y) represent in this situation?

Accepted Answer

The car travels y miles per hour.

Answer

The car travels for y minutes.

Answer

The car travels 60 miles per hour.

Answer

The car travels 60 miles every y minutes.

Question 7

At a grocery store, a bag of 12 red apples costs $10.80 and a bag of 6 green apples cost $6.90.

Which statement is true about the cost of the apples?

Accepted Answer

The cost per green apple is greater than the cost per red apple because $$6.90\div6$$ is greater than $$10.80\div12$$

Answer

The cost per green apple is less than the cost per red apple because 6 is less than 12.

Answer

The cost per green apple is less than the cost per red apple because $$6\div6.90$$ is less than $$12\div10.80$$

Answer

The cost per green apple is greater than the cost per red apple because $$6.90\div10.80$$ is greater than $$6\div12$$

Question 8

Micah has a garden. He constructs a scale model of the garden using the scale 1 inch : 2 feet. The garden has a length of 6 feet.

What is the length of the garden in Micah's model?

Accepted Answer

3 inches

Answer

4 inches

Answer

6 inches

Answer

12 inches

Question 9

A teacher buys 25 notebooks for a total of $12.50. Each notebook costs the same price.

Which equation represents the total cost, c, in dollars, of n notebooks at this price?

Accepted Answer

c = 0.50n

Answer

c = 2n

Answer

c = 25n

Answer

c = 12.50n

Question 10

The graph shows the cost of a pineapple at a grocery store.

Which point on the graph represents the cost per pound, in dollars, for pineapple?

Accepted Answer

$$\left(1,\ 4\right)$$

Answer

$$\left(\frac{1}{4},\ 1\right)$$

Answer

$$\left(4,\ 16\right)$$

Answer

$$\left(6,\ 24\right)$$

Question 11

Which table represents a proportional relationship?

Accepted Answer

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