Question

evaluate the function for the given value of x f(n)=n^2-6n+7n at n=3

Answer 1

$\begin{gathered} f(n)=n^2-6n+7n \\ f(3)=3^2-6(3)+7(3) \\ f(3)=9-18+21 \\ f(3)=12 \end{gathered}$