To calculate the total cost of the snow blower including tax, you need to find the amount of tax and then add it to the original price.
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Calculate the tax: \[ \text{Tax} = \text{Price} \times \text{Tax Rate} = 315.55 \times 0.065 \] \[ \text{Tax} = 20.51675 \]
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Round the tax to two decimal places (if necessary): \[ \text{Tax} \approx 20.52 \]
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Add the tax to the original price: \[ \text{Total Cost} = \text{Price} + \text{Tax} = 315.55 + 20.52 = 336.07 \]
Therefore, the total cost of the snow blower including tax is approximately $336.07.