Sunita is buying some fabric. The total yardage of the fabrics is about 13 yards. Which sum is about 13?

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.

X+y=-4 x-y=2 use elimination with adding and subtraction

Ineed with math stuff it involves graphs