The median is the 6 th element of the 11 th
that is 7
168 hours are in a single week.
The answer is b. Because it just is
The relationship between space, time and velocity for a uniform motion is given by:

where
S is the distance covered
t is the time
v is the velocity
The plane in our problem has a velocity of

and so during a total time of t=4 h, the distance it covers is

therefore, 680 miles.
Answer:
answer in the screen shot provided