Final answer:
To find the price of the TV including tax, calculate the discounted price after the 20% off, add the sales tax to the discounted price, and perform the calculations to find the final price.
Step-by-step explanation:
To find the price of the TV including tax, we first need to calculate the discounted price after the 20% off. The discounted price can be found by subtracting 20% of the original price from the original price. Then, we need to add the sales tax to the discounted price to get the final price.
Let's plug in the numbers:
The discounted price = $1,349 - 20% of $1,349