document.write( "Question 257898: Use an inequality and the five-step process to solve the problem. Jim has gotten scores of 88 and 69 on his first two tests. What score must he get on his third test to keep an average of 85 or greater? \n" ); document.write( "

Algebra.Com's Answer #189817 by checkley77(12844) $\"\"$ $\"About$

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(88+69+X)/3>=85
\n" ); document.write( "(157+X)/3>=85
\n" ); document.write( "157+X>=85*3
\n" ); document.write( "157+X>=255
\n" ); document.write( "X>=255-157
\n" ); document.write( "X>=98 THE GRADE NEEDED FOR AN AVERAGE OF 85 OR GREATER.
\n" ); document.write( "PROOF:
\n" ); document.write( "LET X=99
\n" ); document.write( "(88+69+99)/3>=85
\n" ); document.write( "256/3>=85
\n" ); document.write( "85.33>=85
\n" ); document.write( " \n" ); document.write( "

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