Tammy’s last four homework scores were 68, 76, 70, and 74. the mean absolute deviation of her scores is

Me answer number 3plz explain how you do it

What is the value of x in the following equation? -3x-2=2x+8

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.