B. seven minutes - because that is when the slope of the line is flat, which means he isn't moving.
Yes.
It’s a flat figure (2D), and all of its lines are connected with one another. There aren’t any open points/lines. It’s closed to create a shape. This means it’s a polygon.
Answer- A- 20, B-70, c-20, d-50, e- 110
I think