Chapter 6.3B, Problem 17A

Write each of the following in the simplest form using positive exponents in the final answers.

a ${\left(\frac{1}{3}\right)}^{-1}$ b $\left(\frac{a^{-3}}{a}\right)$ c $\left(\frac{{\left(a^{-4}\right)}^3}{a^{-4}}\right)$

d $\frac{a}{a^{-1}}$ e $\frac{a^{-3}}{a^{-2}}$