Question

Given the function:

f(x) = (3x+7)
What is the output of the function when the input is x = 9?
A 9
B 15
C 17
D 21

Answer 1

Answer isn't one of your options, it is 34.

Explanation:

1. Write the function.

`f(x) = (3x+7)`

2. Substitute the given value of "x" by "x" in the function.

`f(9) = (3(9)+7)`

3. Calculate.

`f(9) = (27+7)\\ \\f(9) = 34`

4. Conclude.

`f(9) = 34`.