Question 1167659
z=(x-mean)/sd
a. z < (12650-15000)/5000 or < -0.47
probability is 0.3192

b. is z>0.28 or probability 0.3897

c. is the probability remaining or 0.2911.

The top 10.20% for Canadian colleges is from the table a z-value of 1.27. Using the calculator value and rounding only here to show but rounding only at the end.
1.2702=(x-15000)/5000
6351.19=x-15000
x=$21351.19 as the 10.20%ile to two decimal places.