Question 469346
First write cost equations based on given information
Let m be miles driven
Plan A:
cost = 36 + 0.22m
Plan B:
cost = 38
B will cost less if B cost is less that A cost:
38 < 36 + .22m
Solve for m
Subtract 36 on both sides
2 < .22m
Divide by 0.22 on both sides
9.09 < m
Therefore, If you drive more than 9 miles Plan B is cheaper