a software designer writes a route optimization planner for a one-technician company servicing the local areas. the technician visits 7 customers each day whose homes mav be all over the citv. the software designer selects the brute force approach for finding the sequence which this means that the software computes the total amount of travel required for all possible routes ie for all different was of visiting the 7 customers in order. how manv different routes will the software have to compute each day?