Answer:
The circle's diameter is 
Step-by-step explanation:
we know that
The circumference of a circle is equal to

where
D is the diameter of the circle
In this problem we have


substitute the values and solve for D


Answer:
15
Step-by-step explanation:
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Answer:
1/3
Step-by-step explanation:
Answer:
Center (4, -13)
Radius = 17
Step-by-step explanation:
Circle equation: 
(h, k) is the center of the circle and the r is the radius.

h = 4, k = -13, r = 17
Y=2x+4
To graph this linear function, put a point on (0,4) since 4 is the y-intercept. From that point, place the next point two units up and one unit over from the y-intercept since the slope is 2 or 2/1.