Acopy machine depreciates at the rate of 15% each year. if the original cost of the copy machine was $20,000, what is the approximate value of the machine at the end of 3 years?

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.