Answer:
10560 ft
Step-by-step explanation:
The average value of a continuous function <em>f(x)</em> over an interval [<em>a</em>, <em>b</em>] is given by the integral,

Compute the integral for <em>f(x)</em> = <em>e</em> ⁻ˣ over [0, 3] :

7 and 1/2 mile because 2,640=1.5 miles
4-1.5=2.5+5=7.5
3 3/8 + 6 2/5 + 3 7/8 + 4 5/8 = 731/40 and simplify that and u get 18 11/40.