Question

Which is the correct way to evaluate F (15) with a function f (x )=2 (x + 3)?

Answer 1

The Solution:

The correct answer is [option 3]

Given the function:

`f(x)=2(x+3)`

We are required to find the value of f(15).

We shall substitute 15 for x in the given function.

`f(15)=2(15+3)=2*18=36_{}`

Thus, we start by substituting 15 for x and then simplify to get f(15) =36.

Therefore, the correct answer is [option 3]