I NEED help for like the millionth time. like i said thanks to everyone who is answering my questions. but click her please if u wanna help. take ur time also thier is no rush.

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.