Determine the equation of the axis of symmetry of a parabola that passes through points (2, 7) and (4, 7).
a) x = -2
b) x = 3
c) x = -3
d) x = 1

In triangle abc segment de is parallel to the side ac . (the endpoints of segment de lie on the sides ab and bc respectively). find de, if ac=20cm, ab=17cm, and bd=11.9cm;

What percent of the circle below is shaded?

At a kentucky friend chicken, a survey showed 2/3 of all people preferred skinless chicken over the regular chicken. if 2,400 people responded to the survey, how many people preferred regular chicken?