CBA #3 REVIEW

Gwen spent $12.50 to purchase 5 bracelets. Each bracelet cost the same amount. Which graph has a slope that best represents this rate?

• Graph A

• Graph B

• Graph C

• None of the above

On a map scale, 2 inches represents 60 miles. Which function can be used to show the relationship between x, the number of inches on the map, and y, the actual distance in miles?

• y = 60x

• y = 30x + 60

• y = 30x

• y = 60x + 60

The cost for electricity varies directly with the amount of kilowatt-hours of electricity used. The cost for using 908 kilowatt-hours of electricity was $108.96. What is the unit rate?

• $8.33

• $799.04

• $108.96

• $0.12

The cost for electricity varies directly with the amount of kilowatt-hours of electricity used. The cost for using 908 kilowatt-hours of electricity was $108.96. What was the cost for using 1,079 kilowatt-hours of electricity?

• $62.04

• $91.69

• $108.96

• $129.48

What are the slope and y-intercept of the function shown on the coordinate grid?

• Slope: 1, y-intercept: (0, 4)

• Slope: 0.5, y-intercept: (0, 4)

• Slope: 0.5, y-intercept: (0, -2)

• Slope: 1, y-intercept: (0, -2)

A survey of customers at a restaurant revealed that 7 out of 10 customers preferred the restaurant’s new spaghetti sauce. Which graph shows the correct linear relationship between the total number of customers and the customers who preferred the new spaghetti sauce?

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The number of gift baskets Nikki can make varies directly with the amount of time she spends making the

baskets. She can make 4 baskets in 1/2 hour.

How many baskets can Nikki make in 7 hours?

An aquarium is being filled with water. The graph shows the height of the water over time as the aquarium is being filled. Which statement best describes the rate of change for this situation? (Unit Rate)

• The height of the water increases 20 inches per second.

• The height of the water increases 1 inch per second.

• The height of the water increases 5 inches per second.

• The height of the water increases 2.5 inches per second.

A student traveled a distance of 136 miles in 68 minutes. Which graph has a slope that best represents this rate? (Unit Rate)

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Which statement is true regarding the additional fee per yoga class or the membership fee?

• The additional fee per yoga class is $3.75.

• The additional fee per yoga class is $8.25.

• The membership fee is $35.00.

• The membership fee is $42.50.