Answer:
Step-by-step explanation:
If we know that D is the midpoint, then 2x + 7 = 4(x-3). Doing the algebra on that gives us
2x + 7 = 4x - 12 and
19 = 2x so
x = 9.5
Let
and 

We have 
Therefore

We have the equation of a line:
.
Put the coordinates of the point (8, 1) to the equation of a line:


<em>subtract 11 from both sides</em>

Answer: 
The equation of the blue graph is A.
Answer:
Let's imagine the image of the zoo.
The diameter is basically the length of the circle.
The penguin swam the radius.
To find the radius, we need to divide the diameter by 2.
The diameter is 20 meters.
20
2 = 10 meters.
2 x pi x 10 = 62.83185307
62.83185307/2 = 31.41592654
Answer = 31.41592654
I would say to the 5th degree because that's the highest exponent there but not 100% sure but I'm pretty sure
Sorry I can't help you more but I hope this helps ome