Can someone please help me with this? Thank you!

Simplify each expression:

1. 3^-2 2.(-4.25)⁰ (Zero) 3. 1/x^-7(Fraction, one over x to the negative 7^th). 4. 5x^-4 5. 8/25^{-3 (}Fraction again) 6. c^-5d⁷

^{Thanks so much (:}