Which equation when graphed has a minimum value at x = - 5/2?

a)
y = x2 + 8x + 16

b)
y = 2x2 + 8x + 16

c)
y = x2 + 10x + 12

d)
y = 2x2 + 10x + 12

At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 16 cubic feet per minute. the diameter of the base of the cone is approximately three times the altitude. at what rate is the height of the pile changing when the pile is 12 feet high? (hint: the formula for the volume of a cone is v = 1 3 πr2h.)

Which of the following is correct interpretation of the expression -4+13

Kayla has a $500 budget for the school party.she paid $150 for the decorations.food will cost $5.50 per student. what inequality represents the number of students,s, that can attend the party?