What is the volume of the right prism? A. 408in.^3
B. 444in.^3
C. 510in.^3
D. 540in.^4
Show your work.​

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

i think u have 12 apples sorry again i don't really know if it correct i'm just tryna hrlp people out.

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative