The number of possible outfits would be 168 outfits. YOu can mix and match up to 168 number of outfits from these set. This is an example of counting principle. In this principle, one event has n possibilities then a second independent variable have m outcomes. Then, the total possibilities would be n times m.
X-intercept is 8
Y-intercept is 3
137 because it’s the same as the angle given.
80x5,000 is 400,000. Not sure what you're asking though.