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Sales tax = tax % of _________.

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_________ is charged on the sale of an item by the government and is added to the bill amount.

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Amount when interest is compounded annually is given by the formula _________.

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The time period after which the interest is added each time to form a new principal is called the _________.

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_________ expenses are the additional expenses incurred by a buyer for an item over and above its cost of purchase.