Answer:
5.7 years
Step-by-step explanation:
we know that
The compound interest formula is equal to
where
A is the Final Investment Value
P is the Principal amount of money to be invested
r is the rate of interest in decimal
t is Number of Time Periods
n is the number of times interest is compounded per year
in this problem we have

substitute in the formula above
Solve for t
Applying property of exponents
Applying log both sides

I don't get what your trying to say.
Find the equation of the line and plug in the x value that gives you which is -3? i am not very sure so i am sorry if i am wrong
Answer:
1) 
2) 
see the explanation
Step-by-step explanation:
we know that
The perimeter of the square is equal to

where
s is the length side of the square
we have

substitute

solve for s

The area of a square is equal to

substitute

we have that

therefore
2 equations that can determine the perimeter of the square are
1)
----> 
2)
----> 