PLEASE HELP! Which one is a statistical question?

Ill mark the brainliest if you me with the these three questions 7,8,9

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

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.