What does the end behavior of x increasing without bound represent? ( i think it’s d but i’m not sure)

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

Maria solved an equation as shown below. what is the solution to maria’s equation?

What dividend is represented by the synthetic below.?