Pls help me it’s for math

Which math sentence can be used to determine if the triangle is a right triangle?

Amap of british columbia has a scale of 1: 1 723 000. the distance on the map between prince george and cache creek is 8 11/16 in. what is this distance to the nearest mile

Mrs. manning's current savings is 156% of what she had in her account last month. if she has $1170 in her account this month, what was her last month's savings? a. $700 b. $725 c. $750 d. $775