Carefully and accurately sketch the polynomial. be sure to label all zeroes, the y-intercept, and any minima or maxima. use your graphing calculator to find the coordinates if any minima or maxima (round to two decimal places). p(x)=-2x^4+x^3+6x^2=-x^2(x-2)(2x+3)

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.)

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Tcan be concluded that % of the seniors would prefer to see more candid pictures in this year's edition of the yearbook.