I believe the answer is 13 I think but I’m not sure but I just did the math off of the top of my head
Sean’s power due to the discount will cost $186.10
Start at the point 0
Then move 5 points right because 5 is positive
The another 3.89 points right because your adding a positive number
Sooo 5 + 3.89 = 8.89
Hope this helps :D