SOLUTION: After three tests, Amanda's average score was 88. What score must she earn on her next test to have a four test average of 90?

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Question 879252: After three tests, Amanda's average score was 88. What score must she earn on her next test to have a four test average of 90?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
%283%2A88+%2B+x%29%2F4+=+90 solve for x
x = 96