Please answer all of the questions because its all a whole part of question

2. a) Why should the rm care about the otation and check clearing process? Discuss any two models to decide whether it is worthwhile to make short-term investments of cash. 5 b) Assume that checks were in the mail an average of 4 days, that the firm takes 0.5 days to process checks and get them to the bank, and that the rm's bank takes 1.3 days to obtain funds for the checks. If the firm could accelerate the transit process such that it had these uids in hand, and could invest them at the rm's cost of capital(10%), how much it could earn in addition? 5