Explain how a fixed cash budget differs from a variable or flexible cash budget

What two basic needs does a flexible (variable) cash budget serve

What world be the probable effect on a firm's cash position of the following events
a) Rapidly rising sales
b) A delay in the payment of accounts payable
c) A more liberal credit policy on sales (to the firm's customers)
d) Holding larger inventories

I think you should read your principles and applications Financial Management book by Arthur Keown that I assigned! Do not refer to cheating on the internet. Cheaters never prosper (at least not with my grades)