Which of the following statements is true of the independent demand for a stock-keeping unit (SKU)? a. It is affected by the demand of other SKUs. b. It needs to be calculated using the forecast of dependent demand. c. It is directly related to the demand of raw materials. d. It needs to be forecasted.

Highland company produces a lightweight backpack that is popular with college students. standard variable costs relating to a single backpack are given below

Alarge tank is filled to capacity with 500 gallons of pure water. brine containing 2 pounds of salt per gallon is pumped into the tank at a rate of 5 gal/min. the well-mixed solution is pumped out at the same rate. find the number a(t) of pounds of salt in the tank at time t.

Oz makes lion food out of giraffe and gazelle meat. giraffe meat has 18 grams of protein and 36 grams of fat per pound, while gazelle meat has 36 grams of protein and 18 grams of fat per pound. a batch of lion food must contain at least "46,800" grams of protein and 70,200 grams of fat. giraffe meat costs $1/pound and gazelle meat costs $2/pound. how many pounds of each should go into each batch of lion food in order to minimize costs? hint [see example 2.]