Answer :
Final answer:
To find f(3) using the given function f(x) = -5x²-x+20, substitute x = 3 into the function and simplify. The value of f(3) is -28.
Explanation:
To find f(3) using the given function f(x) = -5x²-x+20, we substitute x = 3 into the function and simplify:
f(3) = -5(3)²-(3)+20
f(3) = -5(9)-3+20
f(3) = -45-3+20
f(3) = -28
So, f(3) = -28.
Learn more about Function evaluation here:
https://brainly.com/question/12056604
