What is the mean for the data set? 138, 142, 105, 112, 108, 134, 106, 181, 164, 105 express your answer as a decimal to the nearest tenth. enter your answer in the box.

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.