the average rate of 7.3 feet per second = the average rate of x feet per 1 hour = 60*60 seconds that is

7.3/1 = x/3600

x = 7.3 * 3600

x = 26280 feet

since 1 mile = 5280 ft we have

x = 26280/5280 miles

x = 4.98 miles

4.98 miles are jogged in 1 hour.