3. the equation y = 12x 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 worked. carl’s earnings time (h) 3 5 8 10 money earned ($) 45 75 120 150 (a) how much money does carl earn per hour? show your work. (b) who earns more per hour? justify your answer. (c) draw a graph that represents carl’s earnings over time in hours. remember to label the axes.