need the answer to track A offers a flat fee of $25 and $.40 per mile.

truck b offers a flat fee of $30 and $.25 per mile

2 answers

What is your question?
in questions like these it is usually to find where the two deals are equal in cost. Or, equivalently, for how many miles is deal A cheaper than deal B.

The cost the same when

25 +.4m = 30 + .25m

Now just solve for m