Question

Evaluate ()=2+5 for the following and enter your answer in the space provided. Do not include any spaces in your answer

Answer 1

Solution

- The equation given is

$f(x)=2x+5$

- To solve the question, we simply need to substitute the value of x into the expression of f(x).

Question A:

$\begin{gathered} f(-1)\text{ implies we substitute }x=-1 \\ f(-1)=2(-1)+5 \\ f(-1)=-2+5=3 \end{gathered}$

Question B:

$\begin{gathered} f(2)\text{ implies we substitute }x=2 \\ f(2)=2(2)+5 \\ f(2)=4+5=9 \end{gathered}$

Question C:

$\begin{gathered} f(0)\text{ implies we substitute }x=0 \\ f(0)=2(0)+5 \\ f(0)=5 \end{gathered}$

Question D:

$\begin{gathered} f(z)\text{ implies we substitute }x=z \\ f(z)=2(z)+5 \\ f(z)=2z+5 \end{gathered}$