Do at least 5 problems in each section. If you miss one feel free to do more problems in order to increase your percentage of "right answers". Your extra points will be based on the percentage of problems you get correct.
Simplifying expressions with Exponents
Manipulating fractional exponents
Fractional Exponents
https://www.khanacademy.org/math/algebra/exponent-equations/fractional-exponents-tut/e/exponents_4