In Mr. Evans class he has 25 students. If the ratio of boys to girls is 2 boys for every 3 girls, how many girls are in the class

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.