Answer: OPTION B.
Step-by-step explanation:
Given the endpoints of the diameter of the circle, we need to find the midpoint, which is the center of the circle.
The following formula is used to calculate the Midpoint:

Given the endpoints of the diameter of the circle:

We can identify that:

Then, we can substitute these values into the formula:

Therefore, the center of the circle is: 
Answer:
6.28
Step-by-step explanation:
2 x 3.14
Answer:
if you can post a picture of the graph maybe I can tell you alright
Step-by-step explanation:
Answer:30
Step-by-step explanation:
Answer:
It would take 4 minutes.
Step-by-step explanation:
Step 1: divide 63 by 3 to get how many hotdogs the champion can eat in a minute which equals 21
Step 2: Divide 84 by 21 to get 4 minutes