Into a 100-gal tank initially filled with freshwater flow 3 gal/min of saltwater containing 2lb of salt per gallon. The solution is kept uniform by stirring, flows out at the same rate. How many pounds of salt will there be in the tank at the end of:   A. 1 hour and 40 minutes? B. 2hours? C. discuss how the volume of salt inside the tank is affected as time increases.

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The fuel efficiency, E, in miles per gallon of an SUV depends on its weight in pounds, w: E(w)=.0000016 w².016w+54 (1800 ≤w≤5400) +30 -10 10 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 550 Answer questions 2 and 3 below in each of three ways: a. Estimate the answer by looking at the graph above. b. Obtain a more accurate estimate by graphing y=E(w) on your graphing calculator and using the appropriate function under the CALC menu. c. Obtain the exact answer by using algebra. (Show your work!)

If a hose is filling a swimming pool at a rate of 10 liters per​ minute, how long will it take to fill the 3,400​-gallon ​pool?