Respuesta :

Answer:

The total cost to buy a costume is $9.81

Step-by-step explanation:

$10 less 10% = 10 * .1 = $1

Subtract 10% discount of $1

$10 - $1 = $9

Add on 9% sales tax

$9 * .09 = $0.81

Add sales tax to discounted price

$9 + $0.81 = $9.81

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