Maria is two years older than her sister. Which expression below stands for the sum of Maria’s age and her sister’s age? x − (x + 2) (x + 2) − x x + (x + 2) x − (x − 2) None of the above

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.