2. Hanna planted 5 ferns yesterday and can plant 7 additional ferns an hour. Amir planted 6 ferns yesterday and can plant an additional 5 ferns an hour. Hanna and Amir will plant ferns for h hours today. (a) Write an expression to represent the total number of ferns Hanna will have planted. (b) Write an expression to represent the total number of ferns Amir will have planted. (c) Write an expression to represent the total number of ferns both Hanna and Amir will plant altogether. Simply the expression completely. Show your work.