A cable television company is laying cable in an area with underground utilities. Two communities are located on opposite sides of the Willow Creek, which is 100 m wide. The company has to connect points P and Q with cable, where Q is on the north bank 1200 m east of P. It costs $40/m to lay cable underground and $120/m to lay cable under water. What is the least expensive way to lay the cable? 1200 m 100 m Willow Creek Figure 1: Television Cable Plan