PreCalculus - 5.1.1

[logistic_guy]

\(\displaystyle \textcolor{indigo}{\bold{Solve.}}\)

Find \(\displaystyle f(3)\) if \(\displaystyle f(x) = -4x^2 + 5x\).

 

[mathdad]

Last one for now. I think we have to evaluate for f(x) when x is 3. Yes?

If so, let x = 3.

f(3) = -4(3)^2 + 5(3)

f(3) = -4(9) + 15

f(3) = -36 + 15

f(3) = -21

Yes?

 

[logistic_guy]

Last one for now. I think we have to evaluate for f(x) when x is 3. Yes?

If so, let x = 3.

f(3) = -4(3)^2 + 5(3)

f(3) = -4(9) + 15

f(3) = -36 + 15

f(3) = -21

Yes?

\(\displaystyle \textcolor{blue}{\bold{Correct.}}\)

 

[mathdad]

\(\displaystyle \textcolor{blue}{\bold{Correct.}}\)

Thank you for taking the time to check my work and for your professionalism.