Mark recorded two temperature measurements for his experiment one of the measurements is 2/3 of the other measurement if the sum of the measurements is -30 celsius what is the measurement were recorded

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.