Which is true about this triangle?

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

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8