Antonia Martinez, who is running for the state senate, makes this statement: “Either a tax reduction is feasible only if both educational costs do not increase and the welfare program is abolished, or a tax reduction is feasible and either the welfare program will not be abolished or educational costs will increase.” What has Martinez told us about taxes, educational costs, and welfare? (T, E, W)

Use truth tables to obtain the answers to the following exercises. The letters to be used in constructing the truth tables are given in parentheses.