Installing an electric power line underwater costs $90,000 permile and running it along land costs $48,000 per mile. Supposepoint A is at coordinates (in miles) (0,3), point B is at (x,0),and point C is at coordinates (20,0). To run the wire from point Ato point B, the power line must be run underwater. To run the powerline from point B to point C, the power line runs along land. Thetotal cost to run the power line from point A to point B to point C is $1,500,000. Where is point B?