Answer:
$111000
Step-by-step explanation:

I believe the radius would be 3.39
Hope this helps! Good luck! :)
I drew this by hand. sorry I it does not help.
Answer:
x= 12
Step-by-step explanation:
Please see attached picture for full solution.
Answer: Choice A. 1/64
Work Shown:
f(x) = 4^x
f(-3) = 4^(-3)
f(-3) = 1/(4^3) ... see note below
f(-3) = 1/64
Note: I'm using the rule that a^(-b) = 1/(a^b)