the vertex of this parabola is at (-1 -3). which of the following could be its equation? A: x=-2(y-1)^2-3 B: x=-2(y+1)^2-3 C: x=-2(y-3)^2-1 D: x=-2(y+3)^2-1

The lengths of two sides of a triangle are 9 and 15. what can be said about the length of the third side? a. it must be greater than or equal to 6 and less than 24. b. it must be greater than or equal to 6 and at most 24. c. it must be greater than 6 and less than 24. d. it must be greater than 6 and at most 24.