Atruck driver drove 49 miles in 1 1/3 hours. what is the average speed, in miles per hour, or this 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.