document.write( "Question 86026: Can you please help me with this question? This question is from Algebra II, A Beka Book.
\n" ); document.write( "Sarah has an average of 92.5 for her 3 science tests. What does she need to make on the 4th test to get a 94% average?
\n" ); document.write( "Thank you so much for your help.
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Algebra.Com's Answer #62137 by tutor_paul(519)\"\" \"About 
You can put this solution on YOUR website!
If you consider her first 3 tests, you can write the following equation, where x,y, and z are her test scores:
\n" ); document.write( "\"%28x%2By%2Bz%29%2F3=92.5\"
\n" ); document.write( "Equation #1: \"%28x%2By%2Bz%29=277.5\"
\n" ); document.write( "Now, after she takes her 4th test to achieve the 94 average, (call that score 'w'), you can write:
\n" ); document.write( "Equation #2: \"%28w%2Bx%2By%2Bz%29%2F4=94\"
\n" ); document.write( "Now, substitute the value of (x+y+z) from Equation #1 into Equation #2:
\n" ); document.write( "\"%28w%2B277.5%29%2F4=94\"
\n" ); document.write( "And solve for w...
\n" ); document.write( "\"w%2B277.5=376\"
\n" ); document.write( "\"highlight%28w=98.5%29\"
\n" ); document.write( "Good Luck,
\n" ); document.write( "tutor_paul@yahoo.com
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