Can someone help, the picture is above ^

Jordan rides his bike 6 7/15 miles every day to deliver newspapers and to go to and from school. if his ride to and from school is 4 3/10 miles, how many miles is the trip to deliver newspapers? 1 1/3 1 1/6 2 1/6 2 4/5

Which best explains why this triangle is or is not a right triangle?

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.