Rate of Change and Unit Rate

Calculate the rate of change if the distance traveled by a car in 3 hours is 180 miles.

• 90 miles per hour

• 30 miles per hour

• 60 miles per hour

• 120 miles per hour

If 5 workers can complete a task in 8 hours, what is the unit rate of work done per hour?

• 0.4 tasks per hour

• 10 tasks per hour

• 0.625 tasks per hour

• 1 task per hour

Solve the following problem using proportional relationships: If 4 gallons of paint can cover 120 square feet, how many gallons of paint are needed to cover 300 square feet?

• 2 gallons

• 8 gallons

• 15 gallons

• 10 gallons

A car travels 240 miles in 4 hours. What is the rate of change in miles per hour?

• 120 miles per hour

• 80 miles per hour

• 40 miles per hour

• 60 miles per hour

If 8 ounces of a liquid costs $2, what is the unit rate per ounce?

• $3.00 per ounce

• $1.00 per ounce

• $0.25 per ounce

• $0.50 per ounce

Using proportional relationships, determine the cost of 5 pizzas if 3 pizzas cost $18.

• $25

• $20

• $30

• $15

The population of a city is 500,000 and is increasing at a rate of 10,000 people per year. What is the rate of change in population per year?

• 10,000 people per year

• 20,000 people per year

• 5,000 people per year

• 100,000 people per year

If a train travels 300 miles in 5 hours, what is the rate of change in miles per hour?

• 200 miles per hour

• 50 miles per hour

• 100 miles per hour

• 60 miles per hour

A machine can produce 200 units in 4 hours. What is the unit rate of production per hour?

• 100 units per hour

• 50 units per hour

• 300 units per hour

• 25 units per hour

Using proportional relationships, find the cost of 8 movie tickets if 4 tickets cost $36.

• $72

• $60

• $24

• $45