A bag contains 10 red marble and 15 green marbles. if Yukon selects a marble from the bag without looking what is the probability that she will pull out a red marble

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.