Simplify
3. Write your answer using only positive exponents. Evaluate any numerical powers.

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction