Any wants to plant grass in her backyard. Her backyard is in the shape of a rectangle. It’s length is 31 feet and it’s width is 24 feet. Suppose each pack of see covers 12 square feet. How many packs of seed will she need to cover the backyard

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.