SOLUTION: 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 c

SOLUTION: 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 c

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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.
a. $425.80
b.$411.06
c.$413.40
d.$423.40
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
The tax is 390*0.06=$23.40
$390+$23.40=$413.40
also 390(1.06x)=$413.40
C
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