Please helppp fast- I really need to do this can someone find the answer!?

16 more than the product of 5 and p

How do you find the circumfrance of a circle?

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.