Use the Mid-Point formula to calculate the elasticity for each of the following cases: NOTE: Write out the formulas before solving the problems

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Use the Mid-Point formula to calculate the elasticity for each of the following cases: NOTE: Write out the formulas before solving the problems. Solution without appropriate formula will be considered wrong.

A. The price of a certain cough syrup decreased, from $10, to $5 a bottle, which caused the quantity demanded to increase, from 700 bottles, to 1000 bottles per day. Is demand elastic, inelastic, or unitary?

B. The quantity of a certain shirt demanded decreased, from 75,000, to 10,000 units per month, as a result of an increase in price, from $18, to $19. Is demand elastic, inelastic, or unitary?

C. The price of a certain computer game increased, from $32, to $40, which caused the quantity demanded to decrease, from 5,000, to 3,000 per year. Is demand elastic, inelastic, or unitary?

D. You know that Krystal's consumption of Lobster rises, from 150 pounds, to 200 pounds a year because her income increased, from $15,000, a year, to $24,000 a year. Calculate the elasticity, and identify the type of good Lobster is to Krystal.