In a poll last year, the residents of a town were asked to rate the mayor on a scale of -10 to 10 points. The mayor received a average approval rating of -2.5 points. This year, the mayors approval rating decreased by 0.75 points. Whats the mayor's average approval rating this year

The mayor's average approval rating this year would be -3.25 points (-2.5 - 0.75 = -3.25).