First you want to work the discount for the TV. $187.13*0.75=$140.3475 (this will get you the price of the TV after the discount.) Now round the answer $140.3475 to the nearest hundredth. The new answer is $140.35. So the price of the TV after the discount is $140.35. Next use this equation to solve for the tax that would be added to the price of the discounted TV: (t*d)+d=p In that equation t=taxes, d=discounted TV price, and p=price total. Now input the values you know. (0.09*140.35)+140.35=p Multiply what is in the parentheses first. 12.6315+140.35=p Add the two numbers together. 152.9815=p Round the end amount to the nearest hundredth. 152.98=p So now you know that the total price of the discounted TV after tax is added is $152.98. I hope you could understand this and it helps! :D