Question

If f(x) = -7x + 5x2 + 10, what does f(-2) equal?

Answer 1

F(x) = -7x + 5x² + 10

x = -2

substitute the x by its value

f(-2) = -7(-2) + 5(-2)² + 10
f(-2) = 14 + 5(4) + 10
f(-2) = 14 + 20 + 10
f(-2) = 44