Question

How do you evaluate the expression when x = 2, y = 7, z = 4 for 4z?

Answer 1

If `z=4` then `4z = 16`

Explanation:

Since the expression `4z` contains no `x` nor `y` variables they are irrelevant to the solution.

with `z=color(red)(4)`
`4z = 4xxcolor(red)(4) = 16`