A bag contains 12 marbles: 3 red, 2 green, 4 blue, and 3 yellow.
If you randomly pick 1 marble, what is:

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.