Alyssa's test scores are listed below 77, 80, 91, 85

Part A: Calculate the mean AND median of the given data. Show all your work. (2 points)

Part B: Alyssa just finished taking a fifth test. What score must she earn on her fifth test in order to have at least a 85% test average. Show all your work. (2 points)

Part C: How was the median affected by the addition of the fifth test score? (1 point)

Will mark branlist if correcto