@IMStuck It's four questions:

Question

anonymous · Answer

Find the derivative of f(x) = -8/x at x = 11. 
I got $$\frac{ 8 }{ 11 }$$

imstuck · Answer

Ok give me a sec on that one.  Give me all of them, why don't you?

anonymous · Answer

Okay. Use graphs and tables to find the limit and identify any vertical asymptotes of the function. 

I got 1/-16 as the limit and I don't know about the vertical asymptotes.

anonymous · Answer

Find the fifth roots of 243(cos 240° + i sin 240°). 

This one I actually thought I had the hang of but I confused myself and I actually am completely lost.

anonymous · Answer

The last one is 
Find an equation in standard form for the hyperbola with vertices at (0, ±6) and asymptotes at y = ±3/7x.

And I got $$\frac{ y^2 }{ 36 }-\frac{ x^2 }{ 196 }=1$$

imstuck · Answer

That first one, you're in calculus?

anonymous · Answer

I'm in pre-calc. I just remember the power rule that my teacher told me about but none of my choices have what I come up with so I thought it would be 8/11.

imstuck · Answer

From what I remember about this, you can rewrite that as $$f(x)=-8x ^{-1}$$Then take the derviative as you normally would.  The exponent comes down in the front adn gets multiplied by the rest of it.  Then of course you have to subtract the exponent from the one that is there already.  Oh boy, how confusing!  Let's look at it|dw:1402192245477:dw|