On the 5 hour flight from dallas to new york, the airplane was flown at an altitude of 1200 feet. for 35% of this time, the flight flies over water. how many hours is the flight over water?

In terms of x, find an expression that represents the area of the shaded region. the outer square has side lengths of (x+5) and the inner square has side lengths of (x-2), as shown. area: a1 x + a2 square units submit