Question

The angle measures of quadrilateral RSTU are shown.

Answer 1

If  <R=<T
2x=x+35
x=35
<R=<T=2*35=70

<S=3x-35=3*35-35=2*35=70

but <R+<S+<T+<U=360
<U=360- (70+70+70)
<U=360-210
<U=150
Impossible to be a parallelogram 
C is the answer

Answer 2

THE ANSWER IS C No, if x = 35, all three given angles measure 70°. The fourth angle would measure 150°.