Answer:
a) C = 1.40 + .4M
b) $4.60
c) 46.5 <= M (miles)
Step-by-step explanation:
a) Cost = initial fee + 0.40 * miles OR
C = 1.40 + .4M
b) C = 1.40 + .4M
C = 1.40 + .4 * 8
C = 1.40 + 3.20 = 4.60
c) C <= 20 so
20 <= 1.40 + .4M
20 - 1.40 <= .4M
18.60/.4 <= M
46.5 <= M
