8th Grade ... Pre Algebra ... HELP!

(Worried) I have a math test tomorrow and idk how 2 do sum stuff.

im having trouble with how to:

Evaluate decimal numbers with a positive power

Evaluate decimal numbers with a negative power

Evaluate negative numbers with positive exponents

Evaluate negative numbers with negative exponents

I litterally skipped 2 grades worth of math. I skipped anything I would have learned in 6th and 7th grade math . (Wink) unfortunately, thats mostly what i need 2 be able 2 do this. I would luv if someone could SIMPLY xplain 2 me how to do these.(Bigsmile)

Thx so much,

Clueless