Answer:
[tex]\frac{16}{81}[/tex]
Step-by-step explanation:
[tex](\frac{2}{3})^4\\\rule{150}{0.5}\\\text{Note the exponent rule: } (\frac{a}{b})^c =\frac{a^c}{b^c}\\\rule{150}{0.5}\\ (\frac{2}{3})^4\\\\\frac{2^4}{3^4}\\\\\boxed{\frac{16}{81} }[/tex]
Hope this helps.