Find the reciprocal of the number. multiply to check your answer.
1 1/2
a. 3/2
b. 2/3
c. 2/11
d. 11/2

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.