Proportional Relationships

What is the unit rate if the rate is 30 laps for 10 minutes.

• 3 laps per minute

• 10 laps per minute

• 15 laps per minute

• 10 laps per two minute

In the equation y = 14x, what is the constant of proportionality?

• y
• x
• 14
• y=14

Monty and his family are planning a vacation that involves horseback riding. Horseshoe Ranch charges $17.95 per hour to rent horses. How much would the family pay for 3 hours of horseback riding?

• $35.90

• $17.95

• $71.80

• $53.85

1.        The graph shows the total number of markers in 1, 2, 3, and 4 boxes of markers. What is the unit rate?

• 6

• 3

• 4

• 12

A store sees 120 customers in 8 hours. What is the unit rate (in customers per hour)?

• 16 customers per hour
• 15 customers per hour
• 12 customers per hour
• 20 customers per hour

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound
• $5 per pound
• $35 per pound
• 0.125 pounds per dollar

If Antonia can type 408 words in 4 minutes, how many words can she type per minute?

• 408 words per minute

• 100 words per minute

• 400 words per minute

• 102 words per minute

A unit rate is a rate in which the unit in the denominator is:

• 0

• 3

• 1

• 2

 Which runs faster: a cheetah that can run 60 feet in 4 seconds or gazelle that can run 100 feet in 8 seconds?

• A cheetah at a unit rate of 14 ft per sec
• A gazelle at a unit rate of 12 ft per sec
• A cheetah at a unit rate of 15 ft per sec
• A gazelle at 12.5 ft per sec

Which is the better buy? A 12-pack of Pepsi for $3.50 or a 6-pack for $1.80?

• The 12-pack

• The 6-pack

• They're the same

• Neither, I prefer Coke