Question

Evaluate the expression when y = 4. 5 y 8

Answer 1

Answer: Well if it is this:

Evaluate the expression when y = 4.

5 + y + 8

Than your answer will be:

17

If it is like this:

Evaluate the expression when y = 4.

5 x y x 8

Than your answer will be:

160

I am only doing these expressions but they should be right.

Answer 2

I suppose you mean 5y^8.
When y = 4, we have,
5(4)^8 = 5 x 65,536 = 327,680