Help with these 3 please

ect Question 14 0 / 0.5 pts Suppose the cross-price elasticity of demand between hot dogs and mustard is -2.00. This implies that a 20 percent increase in the price of hot dogs will cause the quantity of mustard purchased to O rise by 200 percent. rise by 40 percent. O fall by 40 percent. O fall by 200 percent.Question 19 0 f 0-5 FIE Which of the following statements is not valid when the market supply curve is vertical? t Market quantityr supplied dees net change when the price changes. An increase in market demand will increase the equilibrium quantity. An increase in market demand will increase the equilibrium price. Supply is perfectly inelastic. ct Question 20 0 / 0.5 pts Scenario 5-3 Milk has an inelastic demand, and beef has an elastic demand. Suppose that a mysterious increase in bovine infertility decreases both the population of dairy cows and the population of beef cattle by 50 percent. Refer to Scenario 5-3. The equilibrium quantity will O decrease in both the milk and beef markets. O decrease in the milk market and increase in the beef market. O increase in the milk market and decrease in the beef market. increase in both the milk and beef markets