Determine the center of the radius of the following circle equation x2+y2+4x+2y-76=0

According to the data set, where should the upper quartile line of the box plot be placed?

Factor the polynomial, if possible. if the polynomial cannot be factored, write prime. 9n^3 + 27n^2 – 25n – 75

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart