An automated car wash serves customers with the following serial process: pre-treat, wash, rinse, wax, hand dry. each of these steps is performed by a dedicated machine except for hand-dry step, which is performed manually on each car by one of three workers. the steps of the process have the following process times: -pretreat: 1 minute per car-wash: 5 minutes per car-rinse: 2 minutes per carwax: 3 minutes per carhand dry: 8 minutes per cara. if the car was has a demand of 15 cars per hour, what is the flow rate of the process? b. if the car wash has a demand of 15 cars per hour, what is the utilication of the machine that performs the wax process?

The simple interest in a loan of $200 at 10 percent interest per year is

John and daphne are saving for their daughter ellen's college education. ellen just turned 10 at (t = 0), and she will be entering college 8 years from now (at t = 8). college tuition and expenses at state u. are currently $14,500 a year, but they are expected to increase at a rate of 3.5% a year. ellen should graduate in 4 years--if she takes longer or wants to go to graduate school, she will be on her own. tuition and other costs will be due at the beginning of each school year (at t = 8, 9, 10, and 11).so far, john and daphne have accumulated $15,000 in their college savings account (at t = 0). their long-run financial plan is to add an additional $5,000 in each of the next 4 years (at t = 1, 2, 3, and 4). then they plan to make 3 equal annual contributions in each of the following years, t = 5, 6, and 7. they expect their investment account to earn 9%. how large must the annual payments at t = 5, 6, and 7 be to cover ellen's anticipated college costs? a. $1,965.21b. $2,068.64c. $2,177.51d. $2,292.12e. $2,412.76

The research of robert siegler and eric jenkins on the development of the counting-on strategy is an example of design.