Based on data from 1990 to 1999, the average hotel/motel room rate can be modeled by
R(t) = 27.80
1 + 47.23e-0.6425t
+ 57 dollars per day
where t is the number of years since the end of 1990.†
Approximate the rate at which the hotel/motel room rate was changing at the end of 1996. (Round your answer to two decimal places.) dollars per day per year
Approximate the rate at which the hotel/motel room rate was changing at the end of 1998. (Round your answer to two decimal places.) dollars per day per year