Raul is building a house. on day 1, he uses 3 bags of cement. on each of the following 3 days, he uses 3 times the number of bags used the previous day. how many bags of cement does he use in the last 3 days?

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.