Question

For the function f(x)=5x^2-7x, what is f(-3)? *

Answer 1

f(-3) = 66

Explanation:

5(-3)^2-7(-3)

Answer 2

The answer to your question is f(-3) = 66

Explanation:

Data

Function f(x) = 5x² - 7x

Process

To find f(x), just substitute the -3 in all the x's of the original equation and simplify.

-Substitution

f(-3) = 5(-3)² - 7(-3)

-Simplify

f(-3) = 5(9) + 21

f(-3) = 45 + 21

-Result

f(-3) = 66