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Answer:
f(60)=280
Step-by-step explanation:
f(x)=0.4x²-36x+1,000
x=60→f(60)=0.4(60)²-36(60)+1,000
f(60)=0.4(3,600)-2,160+1,000
f(60)=1,440-2,160+1,000
f(60)=280
This mean that a driver of 60 years old will have 280 accidents per 50 million miles driven.
Answer:
square foot per hour
Step-by-step explanation:
The total area covered = 34 square foot
Time taken = 12 hours
This implies that it takes 12 hours to cover 34 square foot.
Using proportionality,
12 hours ---------------------------------------> 34 square foot
Dividing both sides by 12
--------------------------->
1 hour ---------------------------------------> square foot per hour
The unit rate in square feet per hour is square foot per hour