Question

Matt had 5 library books. He checked 1 additional book out every week without returning any books. Which equation describes the number of books he has, y, after x weeks.
a) y=5x b) y=5-x c) y=1+5x d) y=5+x

I think either C and my mom thinks D.

Answer 1

The answer is d because you started with 5 books and you are recieving 1 every week

Answer 2

First week = 5 + 1 = 6 books
Second week = 5 + 1 +1 = 7 books
So each week he got one more book from the library and had a total of the number of books he recently got plus the number from the beginning, 5.

d) y=5+x

Hope this helps :)