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If f(x) = 16x^2 – 20x, what is the value of f(3)?
(Pls show work)

User Justin Talbott
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1 Answer

23 votes
23 votes

Answer:

f(3) = 84

Explanation:

To evaluate a function for a specific value of the variable, put the value in the function's expression where the variable is, and do the arithmetic.

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Sometimes it works well to simplify the expression a bit.

f(x) = 16x^2 -20x = 4x(4x -5)

f(3) = 4(3)(4(3) -5)) = (12)(7)

f(3) = 84

User Hwcverwe
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