Marie currently has a collection of 58 stamps if she buys s stamps each week for w Weeks which expression represents the total number of stamps she will have?

58 stamps is the number she gets each week. So if she went for one week, 58*1=58. 58*2=116 and so on. Because we don't know the exact number of weeks, we say 58w or 58*w because you multiply however many number of weeks she collects.