Question

What is the value of f(15) if the function is f(x)=(x)(2x+5)

Answer 1

525

Explanation:

f(x)=(x)(2x+5)

f(x)=2x^2+5x

f(15)=2*(15)^2 + 5*15

= 2*225 + 75

=450 + 75

=525