Kenneth runs 12 laps around a track in 15 min. How
many minutes per a lap is that?

What is the difference between regular convex and concave polygons

Which of the following is true for the relation f(x)=2x^2+1

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