Suppose the sales tax rate in your area is 7.5%. explain how to determine the total cost, including tax, of an ereader that costs $125.

To find the tax you first move the decimal place 2 places to the left giving you the exact percent in decimal form. .075 is the correct decimal for this percent. You then multiply that percent by the cost of the product. (125) After multiplying you get the product $9.375. Then you round to the nearest tens place giving you $9.38

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