(1 point) Let t be the time in weeks. At time t = 0, organic waste is dumped into a pond. The oxygen level in the pond at time t is given by tZt+1 t:_ f() t2+1 Assume f(0) = 1 is the normal level of oxygen. (a) What will happen to the oxygen level in the lake as time goes on? The oxygen level will eventually approach its normal level in the long-run. 3 (b)Al'ter how many weeks is the oxygen level at 80% of its normal level? If more than one answer, separate with commas. 2 weeks (Round to at least two decimal places.) Help on numbers