Answer:
12
Step-by-step explanation:
2, the digit in the ones place is double 1, the digit in the tens place. 2 + 1 = 3.
Hope this helps!
Pretty good, How about you
Answer:
28 ft
Step-by-step explanation:
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 :)