Evaluate f(3) if f(x)=2x2+5x

Answer 1

To evaluate f(3), we substitute x=3 into the function f(x) = 2x^2 + 5x:

f(3) = 2(3)^2 + 5(3)
f(3) = 2(9) + 15
f(3) = 18 + 15
f(3) = 33

Therefore, f(3) = 33.