The value is :
34500 * 0.95^m
where m is how many months passed.
If 5% is lost, 95% remains.
You must consider the three couples of points, before and after the dilation.
The bottom-left point was (3,3) and it becomes (4,5). The line connecting these two points is y = 2 x - 3
The bottom-right point was (6,3) and it becomes (10,5). The line connecting these two points is y = x/2
The top point points was (5,4) and it becomes (8,7). The line connecting these two points is y = x-1.
Those three lines meet at (2,1), and thus this is the center of dilation.
Y = 4x - 4
Hope this helps
The probability is 19.88%.
This is a binomial distribution, because there are two outcomes, the events are independent of each other, and there is a fixed number of trials. The binomial distribution is given by:

For this, n is 18; k is 5; p is 0.25: