Answer:
The answer is C. 0.19 I hope this helped you good luck!
Joan ran 200 yards divided by 40 seconds=5 seconds per yard
Bill ran 800 yards divided by 140 seconds = 5.714 seconds per yard
So Bill is at 5.7 seconds and Joan at only 5.
Joan I mean. Joan ran faster..........
X+5+2x-2+90=180. combine like terms and solve like a normal algebra problem to find x. if you need to find the answer for a certain angle, plug in the value you got for x into one of the angle equations