The area of the base of a prism is 21 cm^2. the perimeter of the base is 20 cm. the height of the prism is 8 cm.
what is the surface area of the prism?

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.