(1 point) A two-day environmental clean up started at 9AM on the tirst day. The number of workers uctuated as shown in the following gure. Suppose that the workers were paid 15 dollars per hour for work during the time period 9 am to 5 pm and were paid 22.5 dollars per hour for work during the rest of the day. What would the total personnel costs of the clean up have been under these conditions? total cost = 0 dollars (1 point) A student is speeding down Route 11 in his fancy red Porsche when his radar system warns him of an obstacle 400 feet ahead. He immediately applies the brakes, starts to slow down, and spots a skunk in the road directly ahead of him. The "black box" in the Porsche records the car's speed every two seconds, producing the following table. The speed decreases throughout the 10 seconds it takes to stop, although not necessarily at a uniform rate. Time since brakes applied (sec) 8 10 Speed (ft/sec) 10 0 A. What is your best estimate of the total distance the student's ear traveled before coming to rest (note that the best estimate is probably not the over or under estimate that you can most easily find)? distance =D(include units)