Answer: it is b
Step-by-step explanation:
The equation of a circle:
(h, k) - center
r - radius
Look at the picture. We have
center: (1, -2) → h = 1, k = -2
radius: r = 3
Substitute:
Answer:
40
5 x 8 = 40
80.5 kilometers/h
S=80.5km/h
D644
T8 hours