Question

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: 3 5 8 10
Money Earned: 45 75 120 150
(a) How much money does Carl earn per hour? Show your work. Write your answer in a complete sentence.
(b) Who earns more per hour? Justify your answer. Write your answer in a complete sentence.
(c) Draw a graph that represents Carl’s earnings over time in hours. Remember to put a title, label the axes and use an appropriate scale. Use a ruler or straightedge to draw your lines.

Answer 1

15 per hour

Carl earns more

Explanation:

Carl's earnings = earnings/no ofhours

We select any hour and corresponding earnings say 150 and 10

Earning per hour of Carl = 150/10 = 15 per hour.

b) Carl earns more as 15 >12 hourly rate of other person

c)