Which number is composite 9, 2 , 5, 11

Geometry? i am really bad at math and have dyscalcullia. .

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Which of the following equations is of the parabola whose vertex is at (4, 3), axis of symmetry parallel to the y-axis and focus at (4, -3)? a.) y+3=1/24 (x+4)^2 b.)y-3=-1/24 (x-4)^2 c.)x-4=-1/24 (y-3)^2