In an over-fished area, the catch of a certain type of fish is decreasing at an average rate of 8% per year. if this decline persists, how long will it take for the catch to reach half of the amount before the

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.