Someone plz help me with
5. A. And B they are together

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

Brent wants to know what is 5 x 1/2

43lbs of tomatos cost $387. how much would 41lbs cost