Question

The value of the function $f\left(x\right)=3x-7$at 5 is ________.

Short answer

The value of the function $f\left(x\right)=3x-7$at 5 is$8.$

Step-by-step solution

Given information

Consider the function $f\left(x\right)=3x-7$.

The main objective is to find the value of$f\left(x\right)=3x-7$at$x=5$.

Evaluate

Substitute 5 for $x$in $f\left(x\right)=3x-7$.

$\begin{array}{rcl}f\left(5\right)& =& 3\left(5\right)-7\\ & =& 15-7\\ & =& 8\end{array}$

The value of$f\left(x\right)=3x-7$at 5 is 8.