Question

Evaluate the function at the given value of the independent variable and simplify

Answer 1

Given the function:

`f(x)=x^2+9x-9`

to evaluate f(5), we have to make x = 5 and substitute on the function to get the following:

`\begin{gathered} f(5)=(5)^2+9(5)-9=25+45-9=61 \\ \Rightarrow f(5)=61 \end{gathered}`

therefore, f(5) = 61