document.write( "Question 499382: A local bank charges $8 per month plus 5 cents per check. The credit union charges $2 per month plus 8 cents per check. How many checks should be written each month to make the credit union a better deal? \n" ); document.write( "

Algebra.Com's Answer #337624 by oberobic(2304) $\"\"$ $\"About$

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B = bank charges
\n" ); document.write( "B = 5x + 800 cents
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\n" ); document.write( "C = credit union charges
\n" ); document.write( "C = 8x + 200 cents
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\n" ); document.write( "So, the credit unit slope is 8, which is much steeper than the bank's slope = 5.
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\n" ); document.write( "Finding the point where they cross will tell you where to keep your checking account.
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\n" ); document.write( "The point where they cross will be:
\n" ); document.write( "5x + 800 = 8x + 200
\n" ); document.write( "3x = 600
\n" ); document.write( "x = 200
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\n" ); document.write( "If you write more than 200 checks per month, the credit union is more expensive.
\n" ); document.write( "if you write fewer than 200 checks per month, the bank is more expensive.
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\n" ); document.write( " $\"graph%28500%2C500%2C-10%2C250%2C-10%2C25%2C.05%2Ax%2B8%2C.08%2Ax%2B2%29\"$
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