What is the radius of a circle For the equation x squared plus y squared minus 8 x minus 4 y minus 16 equals 0
​,
do the following.
​(a) Find the center​ (h, k) and radius r of the circle.
​(b) Graph the circle.
​(c) Find the​ intercepts, if any.
​(a) The center is left parenthesis 4 comma 2 right parenthesis
.
​(Type an ordered​ pair.)
The radius is requals
6
.
​(b) Use the graphing tool to graph the circle.
​(c) Find the​ intercepts, if any. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice.

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.