document.write( "Question 1072873: A truck that can carry no more than 6800 lb is being used to transport refrigerators and upright pianos. Each refrigerator weighs 300 lb and each piano weighs 525 lb. Write and graph an inequality to show how many refrigerators and how many pianos the truck could carry. Will 10 refrigerators and 9 pianos overload the​ truck? \n" ); document.write( "
Algebra.Com's Answer #687736 by Edwin McCravy(20054)\"\" \"About 
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document.write( "Let x = the number of refrigerators\r\n" );
document.write( "Let y = the number of upright pianos\r\n" );
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document.write( "\"300x%2B525y\"\"%22%22%3C=%22%22\"\"6800\"\r\n" );
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document.write( "We graph the boundary line:\r\n" );
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document.write( "\"300x%2B525y\"\"%22%22=%22%22\"\"6800\"\r\n" );
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document.write( "Divide through by 25 to simplify:\r\n" );
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document.write( "\"12x%2B21y\"\"%22%22=%22%22\"\"272\"\r\n" );
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document.write( "The intercepts are \"%28matrix%281%2C3%2C0%2C%22%2C%22%2C12%2620%2F21%29%29\" and \"%28matrix%281%2C3%2C22%262%2F3%2C%22%2C%22%2C0%29%29\"\r\n" );
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document.write( "We draw the boundary line, and shade below it because the\r\n" );
document.write( "origin used as a test point:\r\n" );
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document.write( "\"300%280%29%2B525%280%29\"\"%22%22%3C=%22%22\"\"6800\"\r\n" );
document.write( "\"0\"\"%22%22%3C=%22%22\"\"6800\" \r\n" );
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document.write( "gives a true inequality\r\n" );
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document.write( "Will 10 refrigerators and 9 pianos overload the truck?\r\n" );
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document.write( "The points inside or on the boundary of the shaded region\r\n" );
document.write( "represent the loads the truck can carry.  The x-coodinate\r\n" );
document.write( "is the number of refrigerators, and the y-coordinate is\r\n" );
document.write( "the number of pianos.\r\n" );
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document.write( "We plot the point (10,9) and see if it is in the shaded region:\r\n" );
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document.write( "The point (10,9) is outside the shaded region, so yes,\r\n" );
document.write( "10 refrigerators and 9 pianos will overload the truck.\r\n" );
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document.write( "Edwin
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