Which of the following is a true statement? a 0.45 < 0.4 b |-3| = 3 c ≥ d -8 ≤ -9

When you answer this can you explain

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?

Will give brainliestbased on the topographic map of mt. st. helens, what is the contour interval if the volcano height is 2,950 m?