hello please help me

EXO 1: a) PLZ's turnover is $ 7,100 and its total assets are $ 4,500 while its debt-to-equity ratio is 1.40. If the rate of return on equity reaches 10%, what is its net profit? b) When does the horizontal merger create value for the acquirer's shareholders? Why? c) When is the announcement of a dividend increase interpreted by the market as good news? A bad new