Mike, marco, amy, valeria, jeslyn, karina, melanie, maria, sonia, edgar, emmanuel, joey, anthony, perla, david, mia, dominic, isabella, alex, nancy want to know the answer for 3x1 _ 4

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.