Can somebody help me with these geometry questions?

I am taking this practice test and i was wondering if someone can help me.

4. Given triangle QRS congruent to triangle TUV, QS= 3v+2 and TV= 7v - 6 find the length of QS and TV

a. 2

b.9

c. 8

d. 20

12. R, S, and T are the vertices of one triangle. E, F, and D are the vertices of another triangle mr=60, ms=60, mf=60, md=40, RS = 4, and EF = 4. Are the two triangles congruent? If yes, explain and tell which segment is congruent to RT

a. yes by ASA; RT

b. yes by AAS; FD

c. yes by SAS; ED

d. no the triangles are not congruent.

What is the value of x if the triangle has a right angle that measures 56 degrees.

a. 68

b. 62

c. 112

d. 124