Answer these . do not answer if you dont know!

The answer to 1 is A because the angles are the the angle that is labeled is the same. 
number 2 the answer is d, for lines one side is equal to 180 degrees so the degree you are givin is 40 so you subtract 40 to get 140. it is this way because of adjacency being equal. 
number three is c becuase the angle given is 90 and because the two angles are parallel they are equal. so you solve for x by using 90

x-15=90
+15     on both sides of equal sign
x=105