The coordinates of endpoint a in ab are a(-3,0) if the midpoint of the segment is at m(2,3) what are the coordinates of point b?

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Don't know how to find x given these segment lengths

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?