So, when we're tasked with things like this, rewriting everything in terms of sine and cosine and combining fractions often trivializes things, so doing just that gives us:

So out expression is 1/cos(x).
Growth rate = 200% each year
SO population becomes twice in each year
After 20 years, population = 5* 2^20 = 5242880
(Assuming no deaths occur)
A because linear means straight line
D at least 1722.08 because you multiply 22042 by 42 then you divide by 100 and add 1375 to get d at least $1375.
I Hope This Helped!!
Answer:
69.08m
calculate the circumstances :
2×r×pi
11×2×3.14
=22×3.14
=69.08m