What is the value of x3 + 4, when x = 6?

Well let’s remember the rules of pemdas.

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

Since 6 has a exponent of 3 we could do 6^3 before adding 4. 6^3 = 216

So then we would have 216+4.

That would equal 220. The value when x=6 is 220.

Plug in 6 for x

3 (6) + 4 = 22

The value if 22, or you can write it like:

f (6) = 22