Answer:1. 7 2. 
Step-by-step explanation:
1. 
= 7
2. ( doesn't have any simplest radical form)
Technically, everything we know was made up by our own minds. We thought of it all. We decided that the color of the sky would be called "blue" and not "doorknob". Education is a continuous cycle that never stops progressing.
I think it’s positive. As it gets heavier, the cost has a positive slope, or increases. I’m not absolutely sure though
