Hello! So, the cost of $350, has been discounted by 20%. First off, let's find the discounted price. Even though there is a discount, 80% of the price still needs to be paid, because 100 - 20 = 80. Let's multiply. 350 * 80% (0.8) is 280. That's $280 on the dinette. The tax rate is 6.5%. To find the amount of tax, all you have to do is multiply the price by the tax rate. 280 * 6.5% (0.065) is 18.2. There. The tax is $18.20. The answer is B: $18.20.