A one-way flight from Dallas to Atlanta is "150x - 100" miles. Find a single expression that represents the distance for a round trip flight.

A) 300x

B) 300x + 200

C) 300x - 200

D) 300x - 400

The one-way flight is represented as 150x-100miles. If we have a round trip distance to be computed, then we need to multiply it twice such as the solution is shown below:

(150x-100) * 2

300x-200

Therefore, the answer is letter "C" which is 300x-200.