Sarah is renting a car for her weekend trip to the mountains. the total cost of the rental, y, as it relates to the number of miles driven, x, is shown in the graph below.
fill in the blanks so that the functions below, written to represent this situation, are correct. if necessary, answer in terms of a decimal, rounded to the nearest hundredth.

ƒ(x) = a0 x + a1

if you answer i will give brainliest.
(i'm running out of ideas to get )