i need help asap please

Answer:
a) 5 dollar per miles
Step-by-step explanation:
Pick any two points (X1,Y1) and (X2,Y2) then do (Y2 - Y1)/(X2 - X1) (notice X2 > X1), then you can find the solution, go try it yourself.
If it is helpful, plz give me Brainliest.