Help me get them right

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

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!