First, we want to find the amount of sales tax that you would have to buy on the laptop. To do this, you need to find 6% of $299.99, which you do by multiplying $299.99 and 0.06 (the decimal form of 6%).
299.99*0.06=18.00
In order to find the total, you would add the starting price and the tax.
299.99+18.00 = $317.99
Hope this helps!
