Aparty rental company has chairs and tables for rent. the total cost to rent 3 chairs and 5 tables is 42$. the total cost to rent 9 chairs and 7 tables is 72$. what is the cost to rent each chair and each table?

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.