Suppose that you donate $50,000 to your high school, which is then invested at i(1) = 0.05. School trips are paid twice a year using this investment.

Let C represent the semiannual cost of school trips.

I) Determine the cost of school trips.

II) Determine the cost of school trips, if C doubles after 10 years (ie, C for the first 10 years, and 2C after that)