Answer:
f(f(5)) = 11
Step-by-step explanation:

I hope that is useful for you
Answer:
Step-by-step explanation:
If you meant to type x+1<21, then we simplify this inequality by subtracting 1 from both sides, ending up with x < 20.
I do not recognize what your "4" represents.
You have two people answer and whoever answer you think is better you can mark them as brainliest
The answer is d, hope this helps
Step-by-step explanation:
A.C
B.2w + 2(w + 3) = 72
2w + 2w + 6 = 72
4w + 6 = 72
4w = 72 - 6
4w = 66
w = 16.5