How can computational knowledge of the length of a firms operating, payables, and cash cycles help mangers mage and execute better working capital policy?

Please answer these 4 questions

1) the meaning of internal vs. sustainable growth rates as tools t used to evaluate the credibility of management performance promises to shareholders

2) how can computational knowledge of the length of a firms operating, payables, and cash cycles help mangers mage and execute better working capital policy?

3) Roper Technologies slide previously distributed: Roper has negative working capital ! What does that mean in practice for managerial flexibility?

4) Use the mathematical structure of PV, FV, r, t equations to demonstrate in words how managers could evaluate today the choice of whether or not to (a) make an acquisition; (b) pre-fund today a future pension liability; or (c) choose to borrow new funds in bonds.

this is a finance class i will attach a diagram for the question about Roper