document.write( "Question 97004: Can someone please help me come up with the proper inequality equation? Thanks!\r
\n" ); document.write( "\n" ); document.write( "Professor Johnson gives only a midterm exam and a final exam. The semester average is computed by taking 1/3 of the midterm exam score plus 2/3 of the final exam score. The grades are determined from the semester averages by using the table below. If Stan scored only a 64 on the midterm, then for what range of scores on the final exam will Stan get a C or better? Round your answer to one decimal place.\r
\n" ); document.write( "\n" ); document.write( "Grading Scale
\n" ); document.write( "90 − 100 A
\n" ); document.write( "80 − 89 B
\n" ); document.write( "70 − 79 C
\n" ); document.write( "60 − 69 D
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Algebra.Com's Answer #70616 by mathslover(157)\"\" \"About 
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Let stan's marks in the end sem be x\r
\n" ); document.write( "\n" ); document.write( "therefore his average marks = 1/3 * 64 + 2/3 * x\r
\n" ); document.write( "\n" ); document.write( "in order for Stan to get a grade C or greater
\n" ); document.write( "he average marks should be greater than or equal to 70\r
\n" ); document.write( "\n" ); document.write( "therefore we have the inequality\r
\n" ); document.write( "\n" ); document.write( "1/3* 64 + 2/3 * x >= 70\r
\n" ); document.write( "\n" ); document.write( "Multiplying by 3 on both sides of the inequality\r
\n" ); document.write( "\n" ); document.write( "64 + 2x >= 210
\n" ); document.write( "2x >= 210-64
\n" ); document.write( "2x >= 146
\n" ); document.write( "x >= 73\r
\n" ); document.write( "\n" ); document.write( "therefore his range of marks for which he would get a C or better is
\n" ); document.write( "73 to 100
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