Of the citizens who disapprove of the prime minister' s overall job performance, most disapprove because of the prime minister' s support for increasing the income tax  However, Theresa believes that the income tax should be increased
So Theresa probably approves of the prime minister' s overall job performance
Of the people who oppose funding a study to determine the feasibility of building a light rail line in the Loffoch Valley, most also believe that the Valley Freeway should be built. Donna opposes increasing funding for a study, so she probably supports building the Valley Freeway.