Am back to help my fellows, am done with studies. Thank God​

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

Which system of linear inequalities is represented by the graph?

The reflexive property of congruence lets you say that ∠pqr ≅