Wich is the unknown number? which property did u use?

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

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)

Long division the problem is 40 ➗ 348 = ?