Excel Homework

Hello

 I need some one who is good in excel and do this

THERE ARE 5  questions q1 and q2 dont worry about them on the excel file. I will attach an excel file has the answers but i need :

I neeed 3 sensitivity repoorts for Q3,q4.q5

i need algabra experssion on Q3,q4.q5  you can see an example on Q1

THERE 4 WRITTIN questions on part A i need answer for them

Understand the details well time is shot is due 14-15 hrs is not that hard just need someone who is good in excel. 

Thank You