Question

one car rental company charges $30 per day plus $0. 25 per mile driven a second company charges $40 per day plus $0. 10 per mile driven how many miles must you drive for a one-day rental at the second company to be less expensive than the same rental at the first company write an inequality to solve

Answer 1

Let d be mile driven. Then,  

30+0.25d>40+ 0.1d

.15 d>10

d>66.667

you must drive at least 66 and 2/3 miles before the second country is cheaper