Question

if g(x)=(x + 1), for what value of x will g(x)=3?A) 1B) 2C) 3D) 4

Answer 1

Given

$g(x)=x+1$

You need to calculate the value of x for g(x)=3, replace it in the equation as follows:

$3=x+1$

And calculate for x, to do so, you can pass the "+1" to the other side of the equal sign by performin the oposite operation "-1" to both sides:

$\begin{gathered} 3-1=x+1-1 \\ 2=x \end{gathered}$

For x=2 g(x)=3