The sixth grade class sold sweatshirts with their school logo to raise money for a field trip they bought 220 sweatshirts for $8.00 each and sold them at a price of $14.50 each if they sold all the sweatshirts how much profit did they make

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.