Find EG (Line) Please Help :)
I know the answer is 18, but I don’t know how it’s 18

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.

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

What 8/12+8/11 in another way than and improper fraction