need help with 3 & 4 please

3. A state in the southeastern region of the United States operates state liquor stores. Prices at the stores are set in the following fashion: add 41 percent to the wholesale price at which the system acquires the product. To that is added an excise of $8.10 per case. The state sold roughly 36 million cases. The state, however, increases the excise rate to $9.10 per case, and a tentative revenue esti- mate shows that excise revenue will increase by $36 million. The state economist objects: "The demand for liquor is inelastic, so sales will be relatively insensitive to a tax increase. Therefore, revenue will increase by more than $36 million." What is your reaction to this obiection 4. Your state plans to adopt a tuition tax credit for college students. How would you estimate the revenue impact of this provision? How would the decision to use static, microdynamic, or macrodynamic approaches influence your estimate