document.write( "Question 800136: Justin has a grade of 94 and 88 in his first two tests. what must he score on his third test in order to have an average of at least 90? \n" ); document.write( "
Algebra.Com's Answer #482934 by mananth(16946)\"\" \"About 
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let third test score be x\r
\n" ); document.write( "\n" ); document.write( "(88+94+x)/3 = 90\r
\n" ); document.write( "\n" ); document.write( "182+x=270\r
\n" ); document.write( "\n" ); document.write( "x=270-182\r
\n" ); document.write( "\n" ); document.write( "x=88
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