Can someone actually answer this :(

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 answer to |-2x-5|-|-4+8| and x=7

Could someone with number 1 and 2