document.write( "Question 1208114: Holders of credit cards issued by banks, department stores, oil companies,and so on, receive bills each month that state minimum amounts that must be paid by a certain due date. The minimum due depends on the total amount owed.
\n" ); document.write( "One such credit card company uses the following rules:\r
\n" ); document.write( "\n" ); document.write( "1. For a bill of less than $10, the entire amount is due.\r
\n" ); document.write( "\n" ); document.write( "2. For a bill of at least $10 but less than $500, the minimum due is $10.\r
\n" ); document.write( "\n" ); document.write( "3. A minimum of $30 is due on a bill of at least $500 but less than $1000, a minimum of $50 is due on a bill of at least $1000 but less than $1500, and a minimum of $70 is due on bills of $1500 or more. \r
\n" ); document.write( "\n" ); document.write( "Find the function that describes the minimum payment due on a bill of x dollars.
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Algebra.Com's Answer #846304 by mccravyedwin(408)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "This student has written me back with this comment:\r\n" );
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document.write( "Edwin,\r\n" );
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document.write( "Thank you but how on Earth did you come up with this set of inequalities?\r\n" );
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document.write( "Would you other tutors like to help him/her further?  Do you suppose the\r\n" );
document.write( "student doesn't understand the symbols \"%22%22%3C%22%22\", \"%22%22%3C=%22%22\", and \"%22%22%3E%22%22\"?\r\n" );
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document.write( "Perhaps if dollar marks were inserted, that would help.  Maybe the student\r\n" );
document.write( "doesn't understand that the words \"at least\" means \"greater than or equal to\".\r\n" );
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document.write( "Please help the student if you can.\r\n" );
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document.write( "Edwin
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