Atank is filled with 1000 liters of pure water. brine containing 0.07 kg of salt per liter enters the tank at 7 liters per minute. another brine solution containing 0.03 kg of salt per liter enters the tank at 10 liters per minute. the contents of the tank are kept thoroughly mixed and the drains from the tank at 17 liters per minute.

a. determine the differential equation which describes this system. let s(t)denote the number of kg of salt in the tank after t minutes. then

Clara is shopping in a grocery store with her friend. each has their own shopping cart in which they want to place their items. the shopping carts are identical. clara and her friend add the same type and number of items to each of their carts. in the baking aisle, however, clara adds 20 pounds of sugar to her own cart, and her friend adds only 10 pounds of sugar to her own cart. which of the following statements best explains what clara must do to accelerate at the same rate as her friend? a. she must add more sugar to her cart. b. she must apply more force to move her cart. c. she must add 20 pounds of salt instead of 20 pounds of sugar to her cart. d. she must apply less force to move her cart.