The answer is 13/18 because it is congruent to 0.7(2).
Those are the answers for 12,13,14,15
For this case we have the following functions:

By definition of composition of functions we have:

Then substituting:

So:

Answer:

Hello there.^••^
−7w+8(w+1)=w−7
w+8=w−7
w+8−w=w−7−w8=−7
8−8=−7−80=−15
No solutions.
Answer:
x = 12
Step-by-step explanation:
-3x+12=48
-12 -12
*subtract 12 from both sides
-3x = 36
-3x/3 = 36/3
*divide 3 from each sides
x = 12