Does anyone know how to solve this? What its telling us to do is, "For each problem, determine if the relationship presented is an example of direct variation or not. Explain your reasoning

Driving 75 mph, it takes alicia 2 hours to reach the airport to go on a vacation. it then takes her 4 hours to get to her destination with the jet traveling at a speed of 400 mph. how many miles does alicia travel to get to her destination?

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?