Shiyun bought a car in 1999. the value of the car v , in usd, is depreciating according to the exponential model
v =25000×1.5−0.2t, t⩾0
where t is the time, in years, that shiyun has owned the car.
a. write down the value of the car when shiyun bought it.
b. calculate the value of the car three years after shiyun bought it. give your answer correct to two decimal places.
c. calculate the time for the car to depreciate to half of its value since shiyun bought it.
i need c asap

The appalachian trail is a hiking trail that passes through the appalachian mountains. three members of a teen hiking group hiked a section of the trail. the hikers stopped at a rest area and equally shared 3 4 gallon of water. how much water did each person get?

Standard deviation of 19,29,21,22,23

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.