What is the measure (in degrees) of the exterior angle? Write your answer as a decimal. A triangle with two known interior angle measures. The first angle measure is represented by the expression (4x - 31) degrees. The second angle measure is represented by the expression (3x - 70) degrees. The third interior angle measure is unknown but is supplementary to an exterior angle measure represented by the expression (5x - 28) degrees.
A) 54.6 degrees
B) 57.2 degrees
C) 62.4 degrees
D) 68.9 degrees
