Isaac wants to join a gym. he checked out the membership fees at two gyms.
gym a charges a new member fee of $65 and $20 per month.
gym b charges a new member fee of $25 and $35 per month, but isaac will get a discount of 20% on the monthly fee

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.