Problem 4. (4 points) Two runners, Alma and Kim, leave home at the same time and jog in different directions. Alma travels east at a uniform rate that is 2 mph faster than Kim, who is traveling west. After 2 hr, they are 28 mi apart. Find Alma's rate. Problem 5. (4 points) Mona can process 100 requests in 4 hr, and Jane can process 100 requests in twice the time. How long will it take both Mona and Jane, working together, to process 200 requests? Problem 6. (4 points) The number y of fish in Silver Lake between 2000 and 2015 can be approximated by the model f(z) = 1000(30 + 17z x?) where z corresponds to the year 2000. Based on this model, in what year was the fish population about 100,0007 Problem 7. (4 points) The height in feet of an object thrown upward is given by the equation where h is the height of the object after seconds. After how many seconds will the object reach a height of 36 feet? Problem 8. (4 points) How many gallons of a cream that is 22% butterfat must be mixed with milk that is 2% butterfat to get 20 gallons of milk containing 4% butterfat? Problem 9. (4 points) Jay invested $28,500 in two accounts, one paying 2.5% simple in- terest, and the other paying 3.5%. She received $877.50 in interest for 1 yr. How much did she invest each time