## College Algebra (6th Edition)

$\frac{1}{9}$
When an exponential expression has a negative exponent, change the position of the base (from the numerator to the denominator, or vise-versa) and make the exponent positive. $$3^{-3}\times3$$ $$=\frac{1}{3^{3}}\times3$$ $$=\frac{1}{27}\times\frac{3}{1}$$ $$=\frac{1}{9}$$