Question

1. If f(x) = 3x + 5 solve the x when f(x) = 11 2. What is the value of f(16) when f(x) = 4x - 8

Answer 1

(a)x=2

(b)f(16)=56

Step-by-step explanation:

Part A

Given the function f(x) defined as follows:

`f\mleft(x\mright)=3x+5`

When f(x)=11, we have:

`11=3x+5`

We solve for x.

`\begin{gathered} 11-5=3x \\ 6=3x \\ x=(6)/(3) \\ x=2 \end{gathered}`

Part B

Given the function f(x) defined as follows:

`f\mleft(x\mright)=4x-8`

When x=16

`\begin{gathered} f\mleft(16\mright)=4(16)-8 \\ =64-8 \\ =56 \end{gathered}`