Question

The function f(x) = 200 × (1.098)x represents a village's population while it is growing at the rate of 9.8% per year. Create a table to show the village's population at 0, 2, 4, 6, 8, and 10 years from now. Use your table to create a graph that represents the village's population growth. When the population doubles from its current size, the village will need to dig a new water well. To the nearest half of a year, about how long before it is time for the village to dig the new well?

Answer 1

X     |  f(x)=200(1.098^x)
-----|-------------------------
0    |  200
2    |  241.1208 ≅ 241
4    |  290.6962 ≅ 291
6    |  350.4645 ≅ 350
8    |  422.5214 ≅ 423
10  |  509.3935 ≅ 509
 
This is the table the years compared to the population.
But I dont know the second and third question