Chapter 1, Problem 19PT

To determine

To Find: The value of $g(3)$

Answer to Problem 19PT

  $g(3)=30$

Explanation of Solution

Given information:

The expression $g(x)=x^2+7x$

Concept and Formula Used:

Rule of exponent and addition and subtraction.

  $a^n=a\times a\times a\times \mathrm{..................}n\text{ times}\text{.}$

Calculation:

The given expression is

  $g(x)=x^2+7x$

Putting the value of

  $\begin{array}{l}x=3\\ g(3)={\left(3\right)}^2+7\left(3\right)\\ g(3)=3\times 3+7\left(3\right)\\ g(3)=9+21\\ g(3)=30\end{array}$

Conclusion:

  $g(3)=30$