Can someone me with the final question?

Convert 2000 swiss francs to dutch guilders

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year