H(t)=−16t2+28t (first 2 is an exponet) the function h(t) gives the approximate height, in feet, of a dolphin's jump out of water, where t represents the time, in seconds. what is the total length of time, in seconds, it took the dolphin to complete one jump? show your work.

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3

Needmax recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.