Alexis works 7.5 hours a day as a waitress in a restaurant. She earns $12.75 an hour plus any additional money received from tips. How much money does she make in one month if she worked 18 full days and earned $92.55 in tips?

j=-4/5k+6/5 k=-5/4j+3/2

Step-by-step explanation:

Let's solve for j.

15j+12k=18

Step 1: Add -12k to both sides.

15j+12k+−12k=18+−12k

15j=−12k+18

Step 2: Divide both sides by 15.

15j

15

=

−12k+18

15

j=

−4

5

k+

6

5

Let's solve for k.

15j+12k=18

Step 1: Add -15j to both sides.

15j+12k+−15j=18+−15j

12k=−15j+18

Step 2: Divide both sides by 12.

12k

12

=

−15j+18

12

k=

−5

4

j+

3

2

k=

−5

4

j+

3

2

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