Answer:
Yes, because if you substitute 10 for r in the equation and simplify, you find that the equation is true.
Step-by-step explanation:

Answer:
Step-by-step explanation:
The first one.
Answer:
-22
Step-by-step explanation:
First do r(3) by replacing x with 3 in r:
2*3^2 + 2 = 2*9 + 2 = 18 + 2 = 20
Then replace r(3) with 20 to do q(20):
-20-2 = -22
Answer:
Im sorry for you this is too complex
Answer:
i believe u add all of them up
Step-by-step explanation: