It is not differentiable at x=1 since the slope of the tangent line as x -> 1 from the right is 1 while the slope of the tangent line as x->1 from the left is -1
5. (0,1)
6. (-2,-2)
7. (-1,-3)
8. (-3, 2)
Answer: I couldn't find the answer but I did find the formula? Sorry if this doesn't help much :(
Update:
Center at (-3,0)
Radius = 1
Step-by-step explanation:
(x-x1)^2 + (y-y1)^2 = r^2
(x-x2)^2 + (y-y2)^2 = r^2
Assuming that 2000:1 is a ratio of unknown units to centimeters, we can use proportions to find the actual length of the organism.

x = 2000(5.6)
x = 11200
The actual length of the organism is 11,200 units.
I assume you are asking how much time has passed
now, we can set up a proportion with this:
let x = time(in hours)

we cross multiply to get:

divide both sides by 50 to get:

hours