Let's call lifeguarding L and car washing W. In order to write a system, we need to first separate the NUMBER of hours worked from the MONEY earned, because they are very different things.

If she works 10 hours, that is the number of hours worked between both jobs. Therefore, the equation for the NUMBER of hours worked is

L + W = 10.

If she earns $13 an hour lifeguarding, the expression for that is 13L; if she earns $12 an hour car washing, the expression for that is 12W. The MONEY she earned together by doing both those jobs is

13L + 12W = 124

There you go!

7 0

3 years ago

At a bargain store beast boy bought 5 items that each cost the same amount. Cyborg bought 8 items that each cost the same amount

asambeis [7]

The correct answer is C I believe so

7 0

2 years ago