document.write( "Question 122334This question is from textbook Prentice Hall Mathmatics Pre-Algebra
\n" ); document.write( ": Write a function rule for each situation. Then use your function as indicated. \r
\n" ); document.write( "\n" ); document.write( "MONEY: you give a salesperson $20 for a purchase and recieve change. Use your function table to find the amount of change from a $4.50 purchase.\r
\n" ); document.write( "\n" ); document.write( "Thank you SOOOO much for helping. \n" ); document.write( "
Algebra.Com's Answer #89852 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "What you are looking for is a function that results in the value of change\r\n" );
document.write( "based on the value of a purchase with the amount tendered a constant $20.\r\n" );
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document.write( "Let c be the amount of change, and we want \"c=f%28p%29\" where p is the\r\n" );
document.write( "purchase amount.\r\n" );
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document.write( "\"c=f%28p%29=20-p\"\r\n" );
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document.write( "I'm not sure what your book means by a function table, unless it is a list of\r\n" );
document.write( "values for the independent variable (p in this case) against the value of the\r\n" );
document.write( "function at that point.  Here's a fragment of such a table:\r\n" );
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document.write( "
pc
3.5016.50
4.0016.00
4.5015.50
5.0015.00
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