Question

Company A rents copiers for a monthly charge of $360 plus 12 cents per copy. Company B rents copiers for a monthly charge of $720 plus 6 cents per copy. What is the number of copies above which Company A's charges are the higher of the two?

Answer 1

Answer: 600 or more copies

Explanation:

Company A: y = 0.12x + 360

Company B: y = 0.06x + 720

Company A > Company B:

0.12x + 360 > 0.06x + 720

-0.06x -0.06x

0.06x + 360 > 720

-360 -360

0.06x > 360

÷0.06 ÷0.06

x > 600