SOLUTION: Your test scores for the semester are 87, 84, and 85. Can you raise your test average to 90 with your next test? Define the variable and write an equation. Then solve.

Question 666246: Your test scores for the semester are 87, 84, and 85. Can you raise your test average to 90 with your next test? Define the variable and write an equation. Then solve.
Answer by ReadingBoosters(3246) (Show Source): You can put this solution on YOUR website!
x = score needed on 4th test

Solve for x

...
Multiply both sides by 4
256 + x = 360
x = 360 - 256

Only with bonus points!
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