algebra
posted by confused and need an answer. .
If y=35+0.8x gives the distance of the sports car from Flint after x minutes.
find the following
a. How far is the sports car from Flint after 25 minutes?
b.How long will it take until the sports car is 75 miles from Flint? Show how to find the solution using two different methods.

For a, you are given the number of minutes, which is represented by x. Simply substitute your value of x (25) into the equation (y=35+0.8x) to find the value of y, which is the distance of the sports car from Flint.
For b, you are given the distance of the sports car from Flint, which is represented by y. Substitute your value of y (75) into the equation to find the value of x, which is the minutes.
I hope that helps (: Try solving it, and if you have more troubles, reply again. 
Need second method

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