the answer to this would be C I hope this helps :)
1/3=2/6 so
6=36/6 and you add 2/6 and 36/6 to get 38/6 or 19/3
Or 38 sixths
Area = 16 ft.²
Use the square root process:
√16
√(4 * 4)
2√4 = 4
10 percent is the same as saying 0.10 so we simply do this sum of all parts approach.

You should get an answer a bit over 15000 if you plug it into your calculator. Remember, you are taxing a certain amount of dollars at each percentage so don't get hung up on the structure of the taxes. This is why we are subtracting the smaller number from the bigger