Liam must work at least 5 hours per week in her family's restaurant for$8.00 per hour. She also does yard work for $12 per hour. Lias parents allow her to work a maximum of 15 hours per week overall. Elias goal is to earn at least $120 per week.

Step-by-step explanation:

hours work restaurant - "r"

hours work yard - "y"

r + y 15

r 5

8r + 12y = 120 : (4) -----> 2r + 3y = 30

r =

5

30 - 3y ≥ 10

3y 20

y ≤ 20/3

idk

step-by-step explanation:

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9