20. At a plant, 160,000 tons of petrochemicals are required to produce 100,000 tons of plastic. How
many tons of petrochemicals are required to
produce 5,000 tons of plastic?
F. 8,000
G. 10,000
H. 16,000
J. 80,000
K. 100,000

Whta are

A

B

C

D

E

but answer is F

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

if i put something wrong your not gonna like it so rather not say nothing.