You're answer will be $8.49 because you multiply the 6.99 which rounds up to 7, anyways you multiply 7 times the discount (50%) and the answer is 850 so you put your answer in a decimal and you get 8.50 so then you subtract 16.99-8.50 and then you get 8.49 or if you are rounding up to the nearest tenth then it would be 8.50.
Have a great night.