Answer:
Step-by-step explanation:
1. 51 degrees
2. 90 degrees
3. 17 degrees
4. 107 degrees
5. 121 degrees
6. 68 degrees
1) Cancel out the common factor which in this case is 8 
2)First apply exponent rule
now cancel out the common factors which are n and n+7 leaving you with 
3)Factorize
cancel out the common factor in this case x+2 leaving you with 
4) Factorize
cancel out the common factor in this case 3w-1 leaving you with 
5) In the picture
6)In the picture
I am REALLY tired sorry I wont be able to do the rest, I hope these are helpful :)
The answer is $204.Hope this helps.
It will cost $16.6 to buy 20 cookies. Hope it help!