Answer:
The distance from the airport to the corporate offices is 110 miles.
Step-by-step explanation:
Let d be the distance from the airport to the office (at a velocity of 75 mph), the person travels an entire distance of 156 miles, 156-d is the distance from home to the airport (at a velocity of 30 mph).
The equaiton for velocity is:

From this you can find the equation for the time:

You can use the total time to find the distance d because you know that the time between the home and the airport plus the time between the airport and the work is 3 hours:
You can solve the equation to find d:
Now you have that the distance between the airport and the office is 110 miles.