Answer:
45 I believe, sorry if i'm wrong
Step-by-step explanation:
P= 3000 (1.21)^t, t= time in months
1 year = 12 months, and therefore, 1 month = 1/12 years
The equation showing yearly population growth changes to;
P=3000 (1.21)^t/12
The correct answer is equation [1].
2 divided by 2 is one (1)
A=1/2ab
Replace the variables with their value
15=1/2(3/2)b
Multiply 1/2 and 3/2

15=3/4b
Divide 3/4 on both sides
15/(3/4) is the same thing as

45/4=b