In the diagram, the measure of angle 3 is (23x)°, and the measure of angle 4 is (7x)°. A transversal intersects 2 lines to form 8 angles. Clockwise from the top, the angles are 1, 2, 3, 4; 5, 6, 7, 8. What is the measure of angle 4? 30° 42° 120° 138°