Answer:
1. No.
2. Yes, there is no solution here.
Step-by-step explanation:
The former:

is our set of solutions.
The latter:

In other words, there is not any solution from the set of real numbers that suits us.
Answer:
9
Step-by-step explanation:
Seventy-three is the answer
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%.
7. p=0.4
i dont know about 3
or 6