A pendulum swings in a museum. The pendulum starts at its furthest point from the nearest wall. It swings towards the wall until it is only 10 feet away, and then back towards its furthest point, 22 feet away
The function y = a cos(bx) + d is used to model the distance of the pendulum from the wall.
11. Identify the value of the function's amplitude?

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Can someone me with the property questions for 12 13 and 14 plz

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.