Answer: 19 years
Step-by-step explanation:
Given
Amount invested 
Rate of interest 
after 1-year amount becomes

After n years it is

Sum accumulated is 

Answer:
I think elimination with subtraction would be the best answer choice, since all the numbers are positive.
If the value of a is positive, the line slopes upwards.
Answer:
- This might help a liitle its kind of like the question you are asking.
- You might not want to give people 5 points for a long question because most of them might not awnser.
Step-by-step explanation: