
The rule I'm using is

note how I rewrote "3" into the square root of 9, so that everything would have a square root over it, and that allows me to use that rule above.
Answer:
A
Step-by-step explanation:
I believe it equals -73 1/8.
Answer:
14.4% decrease
Step-by-step explanation:
Here is the formula for finding the percentage of decrease:
(starting value - final value) / starting value * 100.
So for your question,
/
There was a 14.4% decrease within 50 years.