out–72 in the first example, 73 in the second.
4) remember you are making a picture frame around the rectangle, so if the picture frame is 5 st on each side, you will start by knitting 5 rows of your non-rolling pattern for the beginning border. after the beginning border, you will work that many stitches in border, x repeats of your main pattern, and at the end add border st. when you get to the length you want (i try to make it at the end of a full repeat) you will work the ending border same as the first.
so here are some stitch patterns to get you started, and 