HELP WITH INPUT OUTPUT FUNCTIONS

[ashaudean]

What is F(-2)? if your answer is not a whole number, write it as a fraction in lowest terms, using the slash mark (/) as the fraction bar.

F(x) = 2x+3/xxx-5

[Math Tutor]

It is not so clear what is the function.
I suppose the function is:

[tex]F(x) = \frac{2x + 3}{xxx - 5}[/tex]

[tex]F(-2)[/tex] means to replace in the fraction [tex]x[/tex] with [tex]-2[/tex]

[tex]F(-2) = \frac{2*(-2) + 3}{(-2)(-2)(-2) - 5} = \frac{1}{13}[/tex]