What is the value of log9 729

D

Step-by-step explanation:

You can solve this by plugging in the x-variable in the coordinate (1, 16) and see if the y-variable matches 16.

For the following:

16 obviously does not equal 16 squared, so we can exclude A.

16 also does not equal 4, so B is out of the question.

16 is not equal to 1/16, so it cannot be C.

16 is equal to 4 squared, so the correct option is D.