During a physics experiment, a class drops a golf ball off a bridge toward pavement below. The
bridge is 75 ft high. The function h = -16t2 + 75
gives the golf ball's height h in feet above the
pavement after t seconds. Use the graph of the
function at the right. After how many seconds
does the golf ball hit the pavement?

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.)

Acarnival sold tickets for $1.50 for adults and $1.00 for students. there were 54 tickets sold for a total of $70.50. write a system of equations to represent the number of adult tickets,x, and the number of student tickets,y. find the solution and explain what it means. i'll you if you me

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)