Geometry

The answer is D. 2x + 3x + 5 = 40.

1. Use the segment - addition postulate:

The segment - addition postulate states that if a point  lies on a line segment , then .

In the given figure, the length of segment  is , the length of segment  is , and the length of segment  is .

2. Substitute the lengths into the postulate formula:

By substituting the values of

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