document.write( "Question 1208093: In 2009 the U.S. Postal Service charged $1.17 postage for first-class mail retail flats (such as an 8.5 inches by 11 inches envelope) weighing up to 1 ounce,plus $0.17 for each additional ounce up to 13 ounces. First-class rates do not apply to flats weighing more than 13 ounces. Develop a model that relates C, the first-class postage charged, for a flat weighing x ounces. Graph the function. \n" ); document.write( "

Algebra.Com's Answer #846266 by ikleyn(52787) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "The model that you request is THIS\r\n" );
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document.write( "             1.17       dollars at  0 < x <= 1 ounces,\r\n" );
document.write( "    C(x) = \r\n" );
document.write( "             1.17+0.17x dollars at  1 < x < = 13 ounces,\r\n" );
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document.write( "where x is the weight, in ounces.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved and explained.\r
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\n" ); document.write( "\n" ); document.write( "Comment from student: You provided the model function but didn't explain how you do it.\r
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\n" ); document.write( "\n" ); document.write( "My response:\r
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\n" ); document.write( "\n" ); document.write( "(1)   This model function is SELF-EXPLANATORY. \r
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\n" ); document.write( "\n" ); document.write( "        It means that you should look in it and listen it, and the formula will tell you everything about itself.\r
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\n" ); document.write( "\n" ); document.write( "        I specially left it without explicit explanations in order for your mind had a room for your independent thinking.\r
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\n" ); document.write( "\n" ); document.write( "(2)   You provided your comment, but forgot to say \" Thank you for your teaching \".\r
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\n" ); document.write( "\n" ); document.write( "        It is quite low level of communicating with a tutor (first basic rule of polite communication is violated).\r
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\n" ); document.write( "\n" ); document.write( "        I am very disappointed to see so low level.\r
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