It would be r,o beacuse of the grid cordinates in the sentence
First, you'll use the "Log power rule," which says that

. In this case, you're going from the form on the right (with p in front of the log) to the form on the left (with p in the exponent position). So, the expression becomes:

Then, you'll use the "Log product rule," which says that

. Again, you're going from the form on the right to the form on the left (basically, from the sum of the logs, to a log of the products). So you get:

There's your expression simplified into a simple logarithm.
40*7= 280
You would put 280 over 320
280
-----
320
Take off the zeros since they both have one.
28
---
32
28/32 is your answer.
If you need a simplified version your answer would be 7/8
The answer is 24.15 but rounded the answer is 24.
The vertex is (105,7)
Notice how on the graph, the y value peaks at 7. The y values to the left and right are symmetrical, meaning that the x value for the y value of 7 is the axis of symmetry, and the point (105,7) is the vertex.