I believe the answer is 0.24
Z=110 because if you add up all the angles inside the triangle it would =180 and take the angle by z and subtract it from 180 you get your answer
the last one because 7*3=21 14*3=42 and 21*3=63
He was there for 3 hours cause 3 x 35 = 105 but 105 + 55 = 160