document.write( "Question 595375: I need help with this math problem.Its a multiple choice & i need to know how you got the answer.
\n" ); document.write( "A new area code has been created. The phone number will have 7 digits, but the first digit cannot be 0 or 1. How Many phone numbers are possible in the new area code ?\r
\n" ); document.write( "\n" ); document.write( "A- 800,000
\n" ); document.write( "B- 1,000,000
\n" ); document.write( "C- 8,000,000
\n" ); document.write( "D- 80,000,000
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Algebra.Com's Answer #377103 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
There are 10 single digit numbers: 0,1,2,3,4,5,6,7,8,9\r
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\n" ); document.write( "\n" ); document.write( "Of these, only 2-9 can be used for the first digits. So there are 10-2 = 8 choices for the first slot.\r
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\n" ); document.write( "\n" ); document.write( "The rest can use any of the ten listed above. \r
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\n" ); document.write( "\n" ); document.write( "From here, you simply multiply out the possible choices\r
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\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "(# of choices for first slot)*(# of choices for second slot)...(# of choices for last slot)\r
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\n" ); document.write( "\n" ); document.write( "8*10*10*10*10*10*10 <<--- There are 6 copies of 10 being multiplied here\r
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\n" ); document.write( "\n" ); document.write( "8*10^6\r
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\n" ); document.write( "\n" ); document.write( "8*1,000,000\r
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\n" ); document.write( "\n" ); document.write( "8,000,000\r
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\n" ); document.write( "\n" ); document.write( "So there are 8,000,000 (eight million) possible phone numbers.\r
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\n" ); document.write( "\n" ); document.write( "So the answer is choice C
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