Iwill give you a crown just me

it is not my real name so don't try to use it

answer:

56

step-by-step explanation:

volume=lxhxw

hope this ! : )

2x7x4-56

answer:

to find the volume of a rectangular prism you go l*w*h

length=7

width=4

height=2

7*4*2=56

step-by-step explanation:

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