Answer:
There are 38 vocab. words in both weeks
Explanation:
There are a few steps to this problem:
First, we know that there are 15 vocab. words in week 1.
Then, in week 2 there are 8 more words than in week 1. So that means 15+8 which equals 23.
Finally, we know that there were 15 words in the first week, and 23 in the second week. So now how many words were there in both weeks? To answer that, you add the number of words in the first week, to the number of words to the second week.
23 + 15 = 38 words total in both weeks