Apples cost $2.00 for 3 pounds. At that rate, how many pounds of apples can you buy for $8.00?

12 pounds

Step-by-step explanation:

4 x 2 is 8 right? Well, then, you take 3 and multiply by 4 to get 12.

(I kinda went dumb during the middle of typing this out so I got stumped for a minute)

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