Find the vertex of the following problem after you change it to vertex form. x2 + 10x + 27 = 0

How do you answer this question? (step by step)

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

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)