PLEASE HELP I ONLY NEED# 8,10,12,19,20 AND 22 DONE

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 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.

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?