Giovanni justifies whether the expression - 4x-8 is equivalent to - 2 (x+1) - 2 (x+3) by letting x=3 in both expressions. What is the value of each expression when x=3

3 and - 20

4 and 4

-20 and - 20

3 and 4

The answer is C. - 20 and - 20 on grad soultions.

For this case we have the following expressions:

-4x-8

-2 (x + 1) - 2 (x + 3)

Evaluating x = 3 in both expressions we have:

-4 (3) - 8 = - 12 - 8 = - 20

-2 (x + 1) - 2 (x + 3) = - 2 (3 + 1) - 2 (3 + 3) = - 2 (4) - 2 (6) = - 8-12 = - 20

Answer:

the value of each expression when x = 3 is:

-20 and - 20