If e-the initial hight of the tree, and the function imply some brackets like
f(x)=30/(1+29e-0.5x) then
for every

the rate of growth is negative, the maximum growth per unit of time would be 30ft
If

then

so the tree couldn't be 2ft tall initially
if the brackets are something like
f(x)=30:(1+29e)-0.5x then the results may differ
6300: The 3 is in the hundreds place so its value is 3*100=300
530: The 3 is in the tens place so its value is 3*10=30
The value is 10x as much since 300=30*10
40% is close to 50% which is = to 1/2
So just divide 60 by 2. which would be around 30
this is the best way i could explain, I hope this helps
Answer:
yes! this is right as it matches the requirements
Associative Property of Addition is your answer.
This means that no matter which set of numbers is parenthesis (the one being done first), the answer is still going to be the same
hope this helps