The measure of an obtuse angle is represented by the expression 2x + 5. What is a possible value for x?

90 < obtuse < 180

answer choices

87.6

42.3

75.4

35.2

To answer this, you have to replace each of the choices to x in the equation. If the answer is between 90° and 180°, then that is an obtuse angle which is the correct answer.

A. 2 (87.6) + 5 = 180.2°

B. 2 (42.3) + 5 = 89.6°

C. 2 (75.4) + 5 = 155.8°

D. 2 (35.2) + 5 = 75.4°

Therefore, the answer is letter C.