What is F(3)? If your answer is not a whole number, enter it as a fraction in lowest terms, using the slash mare (/) as the fraction bar.

F(x)=x^2+5/4x-3

Question

What is F(3)? If your answer is not a whole number, enter it as a fraction in lowest terms, using the slash mare (/) as the fraction bar.

F(x)=x^2+5/4x-3

jigglypuff314 · Answer

you would plug in 3 for x
so  f(3) = (3)^2 + 5/4 (3) - 3

anonymous · Answer

So I would get f(3)=14/9? What after that?

jigglypuff314 · Answer

not quite :)
f(3) = (3)^2 + 5/4 (3) - 3
      = (3)(3) + 5/4 (3) - 3
      =  9  +  15/4  - 3
      =  6  +  15/4
      = 24/4 + 15/4
      = 39/4
therefore  f(3) = 39/4

anonymous · Answer

Thank you so much! 
So in lowest terms that would be 9 and 3/4?

jigglypuff314 · Answer

if you want it as a mixed fraction then yes :)
otherwise  39/4 is just fine.

anonymous · Answer

Thank you :D so much!

jigglypuff314 · Answer

you're welcome :)