Can u ppl me with these problem bc i don't know it 7x+3 and 3x+8

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

Sam makes his sales calls according to a pattern. he travels either north or south depending on the calendar. some of his past trips were as follows: on february 17, april 24, june 10, september 19, and november 3 he drove north. on february 28, may 25, august 22, november 20, and december 18, he drove south. describe sams' pattern. in which direction will sam drive on oct4 and oct 24?