I'll just do the ones I know how to do quickly...
5) If the two sides are 11 and 17, the third side ,x, can be 6 21 values of the third side.
6) The Cities look like this...
---------------------------------------140 miles-----------------------------
Capital City----60 miles----Mytown----25 miles----Yourtown----55 miles----Little Village
This means that the distance from Mytown to Little Village is 25+55= 80 miles.
Hope it helps!