The first one is (1,10)
The second one is (1,5)
The third one is (0.5,10)
I hope this helps
It looks right to me. you followed all the clues.
Answer:
Option a 
Step-by-step explanation:
we know that
The equation of a circle in standard form is

where
(h,k) is the center of the circle
r is the radius
In this problem we have

substitute in the equation



A minute is 6 times as long as 10 seconds, so we expect Karl will ride 6 times as far.

Karl rides 720 ft in 1 minute.