Please help. 60 points.


The equation y=15x describes the amount of money Louis earns, where x is the number of hours he works and y is the amount of money he earns. The table shows the amount of money Carl earns for different numbers of hours works.


Carl's earnings:

Time (h)

3, 5, 8, 10

Money earned ($)

45, 75, 120, 150


(a) how much money does Louis make per hour?

(b) how much money does Carl earn per hour?

(c) who earns more money per hour? How do you know?