A school is going on a field trip. There are 4 buses with 36 students on each bus and 3 buses with 42 students on each bus. How many students are going on a field trip?

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.