Question

How would you fill out this formula with this question? A=Pe ^rt

Answer 1

so A is just A=

Answer 2

e and t stay the same

Answer 3

Total = Principal * e^r*t
You need that formula solved for time and this can be found here:

http://www.1728.org/rate2.htm

Years = ln(Total/Principal) / rate
(where ln means natural log)

To calculate the time for doubling, make principal = 100 and Total = 200
Years = ln(200/100) / .075
Years = ln(2) / .075
Years = 0.69314718056 / .075
Years = 9.2419624075

Answer 4

hmm ok I think I see, what you did there