Skylars grades on four math tests are 85,78,77 and 69 what does skylar need to. score on the next test in order to have a mean score of 80

He needs to get at least a 91

Skylar's scores in relation to the desired mean are

+5, - 2, - 3, - 11

for a total of - 11.

In order to achieve the desired mean, Skylar must score 11 more than the desired mean: 80 + 11 = 91

Skylar needs to score 91 on the next test to have a mean score of 80.