Consider function h what is the range of function h

Alake near the arctic circle is covered by a sheet of ice during the cold winter months. when spring arrives, the ice starts to melt. s(t) models the ice sheet's thickness (in meters) as a function of time tt (in weeks). s(t)=-0.25t+4

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if