The area of a rectangle is 78cm. Its length is 3cm more than twice its width. Find the length and the width of the rectangle

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.