QUESTION 11 For the following demand function: Q(P) =2015 -31P Calculate the price where the quantity demanded falls to zero QUESTION 12 Quantity Fixed Costs Variable Costs Total Costs 100 0 100 100 75 175 100 160 260 100 ??? 340 100 420 520 100 520 620 100 600 700 100 800 900 ??? 1060 ??? What are variable costs when Q=3