Question

If ƒ(n) = 3n 2 - 7, then ƒ(-2) equals _____.

Answer 1

F(n) = 3n² - 7

f(-2) = 3(-2)² - 7
f(-2) = 3(4) - 7
f(-2) = 12 - 7
f(-2) = 5