Can someone help me out with this one? + add an explanation on how you got the answer? Thanks!

Alake near the arctic circle is covered by a 222-meter-thick sheet of ice during the cold winter months. when spring arrives, the warm air gradually melts the ice, causing its thickness to decrease at a constant rate. after 333 weeks, the sheet is only 1.251.251, point, 25 meters thick. let s(t)s(t)s, left parenthesis, t, right parenthesis denote the ice sheet's thickness sss (measured in meters) as a function of time ttt (measured in weeks).

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

How are sas and sss used to show that two triangles are congruent?