Question

Given f (x) = 4x² +3, find f (5)Please help !

Answer 1

we have the following:

$f(x)=4\cdot x^2+3$

x = 5, replacing:

$\begin{gathered} f(5)=4\cdot(5)^2+3 \\ f(5)=4\cdot25+3=100+3 \\ f(5)=103 \\ \end{gathered}$