Answer:
= 10
Step-by-step explanation:
÷ 
if, r = 7 and s = 2
SO..
÷ 
..
Add 2 and 1 to get 3.

Calculate 3 to the power of 2 and get 9.

Divide 9 by 3 to get 3.
7 + 3 = 10
Nothing to drag; nowhere to drag it to.
Park A's population can be modeled by
.. y = 150*1.2^x
Park B's population can be modeled by
.. y = 150*0.8^x
2d = d + 11 + 11 = d + 22
d = 22
Diego is 22 years old.