Question

Combining Functions to Write a New Function that Models a Real-World Situation


A car rental company's standard charge includes an initial fee plus an additional fee for each mile driven. The standard charge S (in dollars) is given by the function S=0.40M+16.95 , where M is the number of miles driven.
The company also offers an option to insure the car against damage. The insurance charge (in dollars) is given by the function I=0.15M+5.70 .

C is total charge, write equation with C and M.

Answer 1

C = S + I , that's it

Answer 2

no, @OOOPS you have to relate the equation to c and m, not s

Answer 3

hihihi, just replace the right hand side of them, you have C with respect to M

Answer 4

s + I
(.4m + 16.95) + (.15m + 5.70)

Answer 5

combine like terms and you have it

Answer 6

thanks

Answer 7

C=.19M+22.65? @Jim766

Answer 8

oh you said .15

Answer 9

C=1.9M+22.65?

Answer 10

sorry it should be .4. + .15m = .55m

Answer 11

c = .55m + 22.65

Answer 12

sorry if I confused you..