Can anyone help answer all this questions?

11. The manager of Ma and Pa's Shoelace Store knows that the own-price elasticity of demand for is inelastic shoelaces is 2.0. Thus, if Ma raises the price of shoelaces from $2.00 to $3.00, her sales will in unit clastic a. drop by 60.0% none of the above drop by 66.7% drop by 80.0% drop by 100.0% none of the above 12. An ineffective price floor will a result in a surplus result in a shortage likely result in a black market have no impact on the price and quantity exchanged none of the above FIGURE THREE (2) (3) (4) 13. If there are empty seats at a Bulls game when the face price printed on the ticket is P1, then this situation can be best represented by which graph in Figure Three? a. (4) (3) C. (2) (1) e none of the above 14. The presence of scalpers (people selling tickets at a price above the face price, P,) at a Bulls game suggests that this situation can be best represented by which graph in Figure Three? a. (4) b. (3) C , ( 2 ) (1) e none of the above 15. A price increase will decrease the amount of money a firm receives only if demand for its product a. is elastic