Answer:
the total price of the item including sales tax is $330.
Explanation:
If the sales tax rate is 10%, then the amount of sales tax charged on an item that costs $300 can be found by multiplying the cost of the item by the sales tax rate:
Sales tax = 10% of $300
= 0.1 x $300
= $30
Therefore, the sales tax charged on the item is $30.
To find the total price of the item including sales tax, we need to add the cost of the item to the sales tax charged:
Total price = Cost of item + Sales tax
= $300 + $30
= $330
Therefore, the total price of the item including sales tax is $330.