Help me out asap plz

Find the value of a. the diagram is not to scale. a quadrilateral is drawn. the upper and lower sides are parallel. the interior angle in the upper left corner is labeled a degrees. the angle in the upper right corner is labeled 113 degrees. the angle in the lower right corner is labeled b degrees. the angle in the lower left corner is labeled 36 degrees. a. 36 b. 144 c. 54 d. 126

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.