Final answer:
To calculate the sales tax of the washer, multiply the price of the washer by the sales tax rate. The sales tax is 6%, which is equivalent to $46.83.
Step-by-step explanation:
To calculate the sales tax of the washer, we need to multiply the price of the washer by the sales tax rate. The sales tax rate is 6% which is equivalent to 0.06 as a decimal. So, the sales tax would be:
Sales tax = $780.50 * 0.06
Sales tax = $46.83
Therefore, the sales tax of the washer is $46.83.