Suppose that a person is taking a walk along a long straight path
and walks at a constant rate of 2.8 miles per hour. Below is a graph of the
velocity function v(t)=2.8 .

How far did the person travel in the first 3 hours?

Distance:

How is this distance related to the area of a certain region under the graph of

Find an algebraic formula

In order to get credit for this problem all answers must be correct.