Sarah earned $114 in 8 hours. how much did she earn per hour?

$14.25

Step-by-step explanation:

You divide

$14.25

Step-by-step explanation:

To answer the problem, you will need to first divide $114 (the total cost) and the total amount of hours (8). Concluding to the answer, once you divide, you get the answer.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18