document.write( "Question 205272: Christian D'Angelo has scores of 68, 65,75, and 78 on his algebra tests. Use a compound inequality to find the scores he can make on his final exam to received a C in the course. The final exam counts as two tests and a C is received if the final course average is from 70 to 79. \n" ); document.write( "
Algebra.Com's Answer #154970 by alicealc(293)\"\" \"About 
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Final exam score = x\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "average score = \"%2868%2B65%2B75%2B78%2B2x%29%2F6\"
\n" ); document.write( "= \"%28286%2B2x%29%2F6\"
\n" ); document.write( "70 ≤ average score ≤ 79
\n" ); document.write( "\"70%3C=%28286%2B2x%29%2F6%3C=79\"
\n" ); document.write( "\"70%2A6%3C=%28286%2B2x%29%3C=79%2A6\"
\n" ); document.write( "\"420%3C=%28286%2B2x%29%3C=474\"
\n" ); document.write( "\"%28420-286%29%3C=2x%3C=%28474-286%29\"
\n" ); document.write( "\"%28420-286%29%3C=2x%3C=%28474-286%29\"
\n" ); document.write( "\"134%3C=2x%3C=188\"
\n" ); document.write( "divide them by 2:
\n" ); document.write( "\"67%3C=x%3C=94\"\r
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