UNIT 3 ASSESSMENT- Ratios & Proportional Relationships

Saul works at the local car dealership. He makes 2% commission on all sales. He sells a car worth $20,000. What is his commission?

• $2,000

• $4,000

• $40

• $400

• $2,400

What is the best approximation of a 15% tip on a $38 car wash?

• $10

• $6

• $7

• $8

• $9

A television normally sells for $320. This week, it's on sale at 60% off the normal price. What is the sale price?

• $128

• $192

• $256

• $320

• $384

Brandon earns $6 for every shirt he sells. Which equation could Brandon use to determine the amount of money he earns (E) for any number of shirts (s) he sells?

• 6 = sE

• s = 6E

• E = 6s

• E = 6 + s

An architect has his floor plan for a house he is building. The foundation for the house has already been laid and measures 300 feet. If the scale on his drawing is 25 ft = 1 in, how long is the house on his floor plan?

• 12 inches

• 24 inches

• 7500 inches

• 1/12 inch

Savannah was paid $87 for 12 hours of babysitting and $65.25 for 9 hours. What is the constant of proportionality that describes this relationship?

• 0.14

• 7.25

• 12.5

• 65

Identify the unit rate in the graph.

• 80 mph

• 60 mph

• 40 mph

• 20 mph

The graph shows the height of a plant over time. What is the unit rate?

• 1/5 inch per day

• 1 inch per day

• 5 inches per day

• 30 inches per day

A faucet can fill 3/8 of a bath tub in 1/4 of a minute. Compute the unit rate.

• 1 tub per minute

• 2 tubs per minute

Find the constant of proportionality for the table and write in the form y = kx.

• y = 1/15 x

• y = 10x