Question 801694
cost = $23.95
cost/mile = $0.10x
totla cost = $76.00

cost + (cost/mile * miles) < total cost
23.95 + 0.10x = 76.00
23.95 - 23.95 + 0.10x < 76.00 - 23.95
0.10x < 52.05
0.10x/0.10 < 52.05/0.10
x < 520.5
x must be less than 520.5 miles

check:
23.95 + (0.10 * 520.5) = 76.00
23.95 + 52.05 = 76.00
76.00 = 76.00