Answer:
I think it's the last one! In an experiment, one group is studied over a short period of time---
14000+7x=35x (x being the number of books) solve for x and you have your answer. 14000=35x-7x=28x therefore x=14000/28=500 so he needs to sell 500 books before he breaks even.
Answer:
720 miles.
Step-by-step explanation:
Going 60 miles per hour for 12 hours would amount to driving 720 miles in total.
The numerical coefficient of this term is -3.
Answer:
5x+2y=35
Step-by-step explanation:
Let me know if this is wrong.
