What kind of activity is described by each of the events

What kind of activity is described by each of the events of the transactions below? (a),”Trude Co. buys a piece of equipment for $40,000.”(b),”Trude Co. borrows $50,000 from a bank, signing a long-term note payable.”(c),”Trude Co. pays $20,000 of its outstanding accounts payable.”(d),”May Corp. arranges $10,000 in new short-term borrowings from the bank.”(e),”May Corp. issues 1,000 of its common stock for $10 per share.”(f),”May Corp. sells one of the buildings it used for operations for $500,000.”(g),May Corp. receives interest revenue on invested funds.(h),May Corp. pays dividends to its investors.