3 Select all the equations that the number 7 will make true. (1 Point) 4+? = 4 ? : 14 = 12 1:7 = ? 3:? = 1 3 9:-? = 63 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.