document.write( "Question 790707: An average score of 90 or above in a history class receives am A grade. You have scores of 91, 90, and 95 on three exams. Find the range of scores on the fourth exam that will give you an A grade for the course. \n" ); document.write( "

Algebra.Com's Answer #479259 by solver91311(24713) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( "If you want to average 90 on 4 tests, then the sum of your scores must be 4 times 90. Add the three scores you do have and subtract from the product of 90 and 4.\r
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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "Egw to Beta kai to Sigma
\n" ); document.write( "My calculator said it, I believe it, that settles it
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