30, once a month, twelve months in a year times 2 you get twenty four plus the other six for the extra half year
Answer of question 1:
x = 4
m = 2
n = 5
Answer of question 2:
x = 81
m = 4
n = 3
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Green's theorem doesn't really apply here. GT relates the line integral over some *closed* connected contour that bounds some region (like a circular path that serves as the boundary to a disk). A line segment doesn't form a region since it's completely one-dimensional.
At any rate, we can still compute the line integral just fine. It's just that GT is irrelevant.
We parameterize the line segment by


with

. Then we find the differential:


with

.
Here, the line integral is





as required.
5/17(3/8) = 15/136
15/136 is your answer
hope this helps