The books are $16 each. To figure this problem out you have to start with the facts: Benny has $124, he buys seven books, then ends up with $12 left. So first subtract 12 from 124. That equals 112. Next divide 112 by 7, when you do that is comes out to the answer of 16! So $16 is the answer.
The answer to this question is A. 120°
8.302, 8.32, 8.3212, and then 8.4
That sucks that that happened... let me know if i can answer any of your questions, i always try to provide a source in my answers:)