(x+y)^2=x^2+y^2+2xy=73+2*24=73+48=121
⇒ (x+y)^2=121
For the division part:

But I think your question differs than this..
Am I right?
as your options do not include 1
Answer:
~Exponential decay because the base is less than 1~
Step-by-step explanation:
I just took the test and got a 100% :) hope this helped! Good luck!