Help! How do I figure these problems out on excel Thank You! :)

If the results on a nationally administered introductory statistics exam is normally distributed with a mean of 100 points and a standard deviation of 8 points, determine the following:

(a) Describe the graph of this distribution (if you can do so, produce an electronic sketch of the graph to the right, otherwise adequately describe the distribution graph through its shape and horizontal scale values.)

(b) Find the z-score for a single exam that had 110 points. Then find the z-score for one with 80 points.

(c) If x represents a possible point-score on the exam, find P(x < 110).

(d) Find P(80 < x < 110) and give an interpretation of this value.

(e) What is the minimum number of points one must score on this exam if they want to be in the top 35% of all the scores?