Find the function that satisfies the equation given that

Question

Bottled water sales. Since 2000, sales of bottled water

have increased at the rate of approximately 9.3% per year. That is, the volume of bottled water sold, G, in billions of gallons, t years after 2000 is growing at the rate given by

dG/dt = 0.093G. 

1. Find the function that satisfies the equation, given that approximately 4.7 billion gallons of bottled water were sold in 2000.
2. Predict the number of gallons of water sold in 2025.
3. What is the doubling time for G(t)?