Rearrange into the form "x^2 + bx + C = 0" then solve by factorising x^2 - 21 = 4x

Arandom sample of 150 high school students were asked whether they have a job. the results are shown in the table. have a job do not have a job male 48 35 female 41 26 select a ord or phrase from the drop-down menus to correctly complete the statements describing the association.

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?