The sales tax on the item listed price of $45 is $3.15 .
To calculate sales tax, you must first convert the tax rate to a decimal value by dividing it by 100% , we get
7/100=0.07
The total cost of the items is $45. To calculate sales tax, simply multiply this price by the previously calculated decimal number , we get
45 × 0.07 = $3.15
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