Let f (w) = 2w^3 - 5. Let z = 2. What is f (z) ?

11

Step-by-step explanation:

z = 2; therefore, f (z) = f (2).

The letter/number inside of the bracket replaces the orginal letter, in this case w.

f (w) = 2w^3 - 5

f (2) = 2 (2) ^3 - 5

f (2) = 2 (8) - 5

f (2) = 16 - 5

f (2) = 11

As a result, f (z) = 11