document.write( "Question 201512: An apartment owner wants to increase the monthly rent from the $250 in x increases of $10.
\n" ); document.write( "A. What is the new price after the x increase of $10?
\n" ); document.write( "B. If the number of apartments rented is 70-2x and the revenue is the number of apartments rented times the rent, what is the revenue?
\n" ); document.write( "C.If the owner wants to receive $17,980 per month, how many $10 increases can the owner make?
\n" ); document.write( "D. What will be the monthly rent?
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Algebra.Com's Answer #151724 by josmiceli(19441)\"\" \"About 
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a)
\n" ); document.write( "\"250+%2B+10x\"
\n" ); document.write( "b)
\n" ); document.write( "\"%2870+-+2x%29%28250+%2B+10x%29\"
\n" ); document.write( "c)
\n" ); document.write( "\"17980+=+%2870+-+2x%29%28250+%2B+10x%29\"
\n" ); document.write( "\"17980+=+17500+-+500x+%2B+700x+-+20x%5E2\"
\n" ); document.write( "\"-20x%5E2+%2B+200x+-+480+=+0\"
\n" ); document.write( "\"-x%5E2+%2B+10x+-+24+=+0\"
\n" ); document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"
\n" ); document.write( "\"a+=+-1\"
\n" ); document.write( "\"b+=+10\"
\n" ); document.write( "\"c+=+-24\"
\n" ); document.write( "\"x+=+%28-10+%2B-+sqrt%28+10%5E2-4%2A%28-1%29%2A%28-24%29+%29%29%2F%282%2A%28-1%29%29+\"
\n" ); document.write( "\"x+=+%28-10+%2B-+sqrt%28+100+-+96+%29%29%2F%28-2%29+\"
\n" ); document.write( "\"x+=+%28-10+%2B-+sqrt%28+4+%29%29%2F%28-2%29+\"
\n" ); document.write( "\"x+=+%285+-1+%29\"
\n" ); document.write( "\"x+=+4\"
\n" ); document.write( "\"x+=+%285+%2B+1%29\"
\n" ); document.write( "\"x+=+6\"
\n" ); document.write( "He can make either 4 or 6 $10 rent increases
\n" ); document.write( "check:
\n" ); document.write( "\"17980+=+%2870+-+2x%29%28250+%2B+10x%29\"
\n" ); document.write( "\"17980+=+%2870+-+2%2A4%29%28250+%2B+10%2A4%29\"
\n" ); document.write( "\"17980+=+%2862%29%28290%29\"
\n" ); document.write( "\"17980+=+17980\"
\n" ); document.write( "and
\n" ); document.write( "\"17980+=+%2870+-+2x%29%28250+%2B+10x%29\"
\n" ); document.write( "\"17980+=+%2870+-+2%2A6%29%28250+%2B+10%2A6%29\"
\n" ); document.write( "\"17980+=+%2858%29%28310%29\"
\n" ); document.write( "\"17980+=+17980\"\r
\n" ); document.write( "\n" ); document.write( "
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