Answer:
8
Step-by-step explanation:
There are 6 different combinations of 2 books from the group of 4 that he could choose to do.
Let's say all of the books were letters.
Books a, b, c, and d.
Different combinations include:
ab, ac, ad, bc, bd, and cd.
Answer:The equation would be 3n+1 apples.
Step-by-step explanation: