SOLUTION: In fact, I have to solve problem 26, but some information are found in problem 25.here they go. 25) Suppose ABC car rental charges a fixed amount per day plus an amount per mile f

Question 158257This question is from textbook college algebra
: In fact, I have to solve problem 26, but some information are found in problem 25.here they go.
25) Suppose ABC car rental charges a fixed amount per day plus an amount per mile for renting a car.Heidi rented a car one day and paid $87 for 200 miles. On another day, she rented a car from the same agency and paid $117.50 for 350 miles.Determine the linear function that the agency could use to determine its daily rental charges.
now, the real problem 26) Suppose that Heidi (of problem 25) also has access to speedy car rental, which charges a daily fee of $15.00 plus $ 0.31 per mile.Should Heidi use ABC Car rental from problem 25 or speedy car rental?
well, I started by find 25)f(x)=0.25x+30 and I tried to use f(x)=0.31x+15,with no results. This question is from textbook college algebra

Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
it depends on the miles she drives

speedy has a lower daily fee, but charges more per mile

if you set the two functions equal to each other, you can solve for the miles at which point it is cheaper to rent from ABC

you should check your numbers for the ABC rental function
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