4. Brian is driving 324 miles to visit some
friends. He wants to get there in 6 hours.
How many miles does he need to drive
each hour?

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.