Question

Use the function f(x) = 2x^3 to find the value of f(4).

a) 32
b) 64
c) 128
d) 256

Answer 1

To find f(4) for the function f(x) = 2x^3, you calculate 4 cubed (64) and then multiply by 2 to get 128. Therefore,

the answer is 128, option c.

Step-by-step explanation:

You have asked to find the value of f(4) using the function f(x) = 2x^3. To do this, you substitute the value of 4 into the function:

f(4) = 2(4)^3

To solve, first compute the cube of 4:

4^3 = 4 × 4 × 4 = 64

Then multiply this result by 2:

f(4) = 2 × 64 = 128

So, the value of f(4) is 128, which corresponds to option c.