6. Regarding the type of analysis to be used in the study of the economic effects of taxes: let us imagine that we want to analyze the effects of a tax on profits with respect to investment. What relationships between variables should we analyze?

a. It is only to be studied how the existing investment has been modified after the introduction of the tax with respect to the volume of investment in the past.

b. The previous sentence is incomplete since the (counterfactual) relationship between the level of investment observed and the level of investment that could have been made in the absence of taxes must also be studied 7. What definition should be used to talk about fiscal neutrality? a. Fiscal neutrality seeks to equalize taxpayers' income. b. Fiscal neutrality means not modifying the functioning that the market and its members would have followed in the absence of said tax.