Your test scores in one class are 82 and 86. What possible scores can you earn on your next test to have a test average between 84 and 89​, ​inclusive?

Question

I just need the answer.

Answer 1

82+86+ X = or > 3(84) = 252

X > 84

82+86 + X < or = 3(89)= 267

X < 267-168 = 99

the next test score has to be between 84 and 99 to get an average between 84 and 89