document.write( "Question 1120420: The total cost of an item in dollars, including a 6% sales tax, can be determined by the expression x + 0.06x, where x is the cost of the item before the tax. Determine the total cost of an item whose cost before tax is $390.
\n" ); document.write( "a. $425.80
\n" ); document.write( "b.$411.06
\n" ); document.write( "c.$413.40
\n" ); document.write( "d.$423.40
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Algebra.Com's Answer #736087 by Boreal(15235)\"\" \"About 
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The tax is 390*0.06=$23.40
\n" ); document.write( "$390+$23.40=$413.40
\n" ); document.write( "also 390(1.06x)=$413.40
\n" ); document.write( "C
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