Aone-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.