Please answer the three questions and provide a detailed step-by-step (in bullet or number format) for each solution. Thank you!

The SMART DITO GLOBAL cellphone tower is designed to service a 13-mile radius. The tower is located at 4 miles east and 6 miles south on a coordinate plane . You are cellphone user subscribed to SMART DITO '1 GLOBAL and standing at (5, 7). ""I Will you be able to get a signal _ from where you are standing? -- Justify your answer. At which coordinates should you stand to get a signal? What is the standard equation of the boundary of the region serviced by the tower