B(w) = 12; Katy will have read 12 books after w weeks b(2) = 10; the number of books that Katy will have read in 2 weeks is 10 b(3) = f; the number of books that Katy will have read after 3 weeks is f Remember w is just number of weeks!!
Step-by-step explanation: Jill sold half and you dont know how much it is you know that now she has 36, but before she bought 16 so 36 - 16 = 20 but she sold half
