Question

If $$f(x) = 3x - 5x^2 - 1$$, then $$f(-1) = ?$$

Options

• 1

• –1

• 7

• –9

Answer 1

–9

Explanation:

$$f(-1) = 3(-1) - 5(-1)^2 - 1$$

$$= -3 - 5 - 1$$

$$= -9$$