Suppose that the supply and demand of whiz-bangs is given by the following equations Qd = 20 - Qs = 2P 99 Homework - Unanswered a What is the equilibrium price of Whiz-bangs? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer 6 b 8 U 10 12 Unanswered Submit Q10 Homework Unanswered What is the elasticity of demand at the equilibrium price and quantity? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a 1-1/4 b -1/3 c -1/2 d Unanswered