Pretty sure it is D
if you solve for the intercepts you get these answers
y-intercept is 6
x intercept is 2
The rate of change is -2 :)
53 minutes
3:08 to 4:00 is 52 minutes.
to 4:01 would add an extra minute which would be 53.
Find the intersection point between the 2 restraint equations:

Substitute back in to find y-value:

P is maximized at point (12,6)
That would be twenty-eight thousand, seven hundred and three.
Hope that helped :)