Merv has 15 books in his bookshelf. Each month he buys another 2 books. What function could express the number of books, b, that Mo has over m months? How many book will he have after 3 months?
The function that expresses the number of books, b, that Merv has over m months can be represented by the equation:
b = 15 + 2m
To find out how many books Merv will have after 3 months, substitute m = 3 into the equation:
b = 15 + 2(3)
b = 15 + 6
b = 21
Therefore, Merv will have 21 books after 3 months.