SOLUTION: Sarah's exam score are 73,92 and 84. What scores on the fourth exam will make her average exam score at least 85

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Question 41330: Sarah's exam score are 73,92 and 84. What scores on the fourth exam will make her average exam score at least 85
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
You use the mean:
%2873+%2B+92+%2B+84+%2B+x%29%2F4+%3E=+85
73+%2B+92+%2B+84+%2B+x+%3E=+340
73+%2B+92+%2B+84+%2B+x+%3E=+340
x+%3E=+91