Answer:
perhaps around 7.5?
Step-by-step explanation:
hope this is right :)
So the function is f(x)=2x+1
For the inverse function just replace f(x) with y and solve for x.
y=2x+1
y-1=2x
x=y/2 -1/2
Now to get the same labels replace x with f(x) and y with x to get
f(x)=x/2 - 1/2
6 gallons in 4 1/2 seconds to travel 1/4 mile
Multiply through by 4
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The dragster will :
use 24 gallons in 18 seconds to travel 1 mile.