Problema Solution
Jean can rent a car for a flat fee of $30 or for $18 plus 40 cents per mile.Use an inequality to describe the number of miles driven at which it is more economical to pay the flat fee.
Answer provided by our tutors
flat fees = 30
second case = 18 + 0.40 * miles
For the flat fee to be more economical we can write .
let mile = " x"
18+ 0.40* x > 30
hence the inequality can be given as 18+ 0.40* x > 30
Solving
0.40 x > 12
x > 12/0.4 = 120/4 = 30 miles