There was tree cover on 4,500 acres of land, but two years later there was only 1,125 acres of tree cover. Assume that the coverage decreases at an exponential rate. Write a function to model this situation with a B-value of 1.

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.