Well, luckily it is apparent that (x-1) is a root because when x=1 the equation is equal to zero. So we can divide the equation by that factor to find the other roots.
(2x^3+9x^2+4x-15)/(x-1) 2x^2 r 11x^2+4x-15 11x r 15x-15 15 r 0
Your answer would be B. the closed circle on 25 includes the minimum age if 25 as where open would not. and to include any age above 25 you must shade to the right. hope this helps!!
