Answer:
The interest rate for the given investment is 18%.
Step-by-step explanation:
We are given that,
The function representing the investment model is,
.
It is required to find the interest rate for the investment.
Since, the function can be re-written as,

i.e. 
So, on comparing with the formula for compound interest i.e.
, where 'r' is the interest rate.
We have that,
The interest rate for the given investment is 0.18 i.e. 18%.
Your answer is 6 because 6 is the smallest number that is divisible by both 2 and 3
A) (-6,-3], (-3, 3), [3,7)
B) (-5,-5), (-3,-3), (-1,6)
C)6
D) X=5
E) f(2)= -3
F)4 & 6