Suppose your class sells gift wrap for $4 per package and greeting cards for $10 per package. your class sells 205 packages in all and recieves a total of $1,084. find the number of packages of gift wrap and the number of packages of greeting cards sold.

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.