Question

Given the function f(x) = -5x²-x+ 20, find f(3). O-28 O-13 O62 O64

Answer 1

Answer: $\Large\boxed{First~Choice.~-28}$

Step-by-step explanation:

Given function expression

f(x) = -5x² - x + 20

Requirement of the question

Find the value of f(3)

Substitute the values into the function

f(x) = -5x² - x + 20

f(3) = -5(3)² - (3) + 20

Simplify the exponents

f(3) = -5(9) - 3 + 20

Simplify by multiplication

f(3) = -45 - 3 + 20

Simplify by subtraction and addition

f(3) = -48 + 20

$\Large\boxed{f(3)=-28}$

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