14.  an engineer recorded the acceleration of an experimental rocket.

  time (sec) 0 1 2 3 4 speed (mph) 4 12 36 108 324

Which speed is the fastest (use 1 mile ≈ 1.6 kilometers)? a. 12 miles/hour b. 18 feet/second c. 19 kilometers/hour d. cannot be determined

What is the solution of log2  (3x  -  7)  =  3? 4 5

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.