Chapter 6 Rational Exponents and Radical Functions - 6.3 Perform Function Operations and Composition - Guided Practice for Examples 1, 2, and 3 - Page 429: 5

$$3x^{\frac{4}{5}}$$

Given that the two expressions, $f(x)$ and $g(x)$ are functions, we know that they will follow the rules of functions listed on page 429. Knowing this, we obtain: $$=3x^{-\frac{1}{5}+1}\\ 3x^{\frac{4}{5}}$$