Question

Evaluate the following expression given in the function below

Answer 1

Evaluating expressions

In order to find the result we just have to replace x by the number into the parenthesis:

`\begin{gathered} f(x)=x^2+7 \\ f(3)=3^2+7 \\ f(3)=9+7=16 \\ \\ h(x)=(12)/(x) \\ h(-2)=(12)/(-2)=-6 \\ \\ j(x)=2x+9 \\ j(7)=2\cdot7+9 \\ j(7)=14+9=23 \end{gathered}`

Answer: f(3) = 16, h(-2)=-6, j(7) = 23