Is this a proportional relationship? If so, find the constant of proportionality and write an equation.
Yes, the constant of proportionality is 0.4. y=0.4x
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baam
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gold
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rocket
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lifesaver
Give 25 points!
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15
You earn $33 in 8 hours. At that rate, how much would you earn in 5 hours?
$20.63 (20.625)
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25
Bob is taking his son to look at a college 150 miles from their home. In the first hour they drive at a rate of 60 mph. If they want to reach their destination in 2 Â― hours, what speed must they average the last 1 1/2 hours?
60 miles per hour
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15
Benito saves $6 out of every $20 he earns. He earned $90 one month. How much did he save?
$27
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15
You jog 3.6 miles in 30 minutes. At that rate, how far will you run in 20 minutes?
2.4 miles
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15
Jack delivered 90 newspapers in 20 minutes. At this rate, how long will it take him to deliver 135 newspapers?
30 minutes
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15
Is this a proportional relationship? If so, find the constant of proportionality and write an equation.
Yes, the constant of proportionality is 5. y=5x
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seesaw
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gift
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rocket
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baam
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15
What is the cost of six filters if eight filters cost $39.92?
$29.94
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15
An airplane flies 105 miles in Â― hour. How far can it fly in 1 ž hours at the same rate of speed?
262.5 miles
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15
Is this a proportional relationship? If so, find the constant of proportionality and write an equation.
No, the ratios are not equivalent. 3 does not equal 2.5
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15
Is this a proportional relationship? If so, find the constant of proportionality and write an equation.
Yes, the constant of proportionality is 7. y=7x
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15
If one gallon of paint covers 825 sq. ft., how much paint is needed to cover 2640 sq. ft.?
3.2 gallons
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15
Sparky's Car Wash can wash 20 service vehicles in 5 hours. How long would it take the company to wash 45 service vehicles?