Julio cubes a number and then the cube root of the result. he ends up with 20.what number did julio start with

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

An equation in slope-intersept form the lines that passes thought (-8,1) and is perpindicular to the y=2x-17.