Steps to solve:
f(x) = x^2 + 5x - 9
~Substitute
f(3) = 3^2 + 5(3) - 9
~Simplify
f(3) = 9 + 15 - 9
~Add
f(3) = 24 - 9
~Subtract
f(3) = 15
Best of Luck!
Answer:
Step-by-step explanation:
f(3) = (3)^2 + 5(3) - 9 = 9 + 15 - 9 = 24 - 9 = 15
