Katie gives Maggie half of her pencils. Maggie keeps 5 pencils and gives the rest to Jamil. A. Write an expression for the number of pencils Maggie gives to Jamil. B. If Katie had 16 pencils, how many pencils does Maggie give to Jami And How many pencils did Katie have if Maggie gave if Jamil 1 pencil? Explain how you can use the Expression to help you answer the question.​