Help Trying to Figure Out This Forumla

[zacharyrs]

So I've made easy math programs with C before, but my task at hand is a bit complex for where my knowledge is at the moment.

I need to take the calculator found here (calculator: http://ohts.wustl.edu/risk/calculator.html , appendix which covers it a bit: http://ohts.wustl.edu/risk/formula.html) and program it into a ObjC program. I'm having a hard time trying to figure out the weight/formula for this. Hoping to find help in the right direction on how I can figure this out.

[Glenton]

I don't really see the problem. Just copy their formula step by step, as they give it.