- Twelve red marbles and 15 blue marbles are in a bag. If one marble is drawn from the bag, what is the probability the marble is not red?

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.