SOLUTION: Your test scores in one class are 80 and 84. What possible scores can you earn on your next test to have a test average between 82 and 88, inclusive?
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Question 1169462: Your test scores in one class are 80 and 84. What possible scores can you earn on your next test to have a test average between 82 and 88, inclusive? Answer by ikleyn(52798) (Show Source):
The governing inequality is this one
82 <= <= 88.
Multiply both sides by 3
82*3 <= 164 + x <= 88*3
Simplify
82*3 - 164 <= x <= 88*3 - 164 or
82 <= x < = 100. ANSWER
