Neil is on a scuba diving expedition. The graph shows Neil’s approximate elevation as he jumps off the dive boat. The variable E is his elevation in feet with respect to the water level, and t is the time in seconds. Which equation best models the given graph?

A.
E = -7t + 28
B.
E = -7t2 + 15t + 28
C.
E = -7t2 + 15
D.
E = 7t2 + 15t − 22

An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

Now max 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.