For this case we have the following functions:

We must find 
By definition of composition of functions we have to:

So:

We have different signs subtracted and the sign of the major is placed.
Finally we have to:

ANswer:

Answer:
D. 6
Step-by-step explanation:
Let's first find x :-

Now that we found x, let's find QR :-
QR = 2x + 22
Therefore, QR = 6 !!!
Answer:
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