This is similar to Problem 12 from your 1.3 worksheet.

Simplify each of the following. Your final answer should have no negative exponents.

a) $9 a^{-8} b^{-9} =$

b) $\dfrac{6 w^{4}w^{-6}}{14 w^{-1}w^{5}} =$

c) $\left(-7 p^{9}\right)\left(8 q\right)^0\left(5 r^{5}\right) =$

Hint: