What is the value of f(3)?

A.) -18

B.) -26

C.) -33

D.) -60

E.) -75

= 5x² - 28x - 21 {used distributive property}

f(3) = 5(3)² - 28(3) - 21 {substituted 3 for x}

= 5(9) - 84 - 21 {evaluated exponent and multiplied -28 by 3}

= 45 - 84 - 21 {multiplied 5 by 9}

= -60 {subtracted}

**D.) -60**

**Ask Algebra House**