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Evaluate f(3) for the function f(x)= 15x^2 -x+20

User Waxim Corp
by
9.3k points

1 Answer

1 vote

Answer:


\huge \boxed{f(15) = 152 }

Explanation:


f(x) = 15 {x}^(2) - x + 20

To find f(3) , substitute the value of x that's 3 into f(x). That is for every x in f(x) replace it with 3.

We have


f(15) = 15( {3})^(2) - 3 + 20 \\ \: \: = 15(9) + 17 \\ = 135 + 17 \: \\ = 152 \: \: \: \: \: \: \: \: \: \:

We have the final answer as


f(15) = 152

Hope this helps you

User Nandan Acharya
by
8.6k points

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