Apollo spas services 105 hot tubs. if each hot tub needs 165 ml of muriatic acid, how many liters of acid are needed for all of the hot tubs?

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.