Over which interval(s) is the function decreasing? A) -4 < x < 3 B) -0.5 < x < ∞ C) -∞ < x < -0.5 D) -∞ < x < -4

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