B) Interpret what the derivative tells us. df/dy 0.0 -0.2 -0.4 -0.6 -0.8 -1.0 0 5 15 10 years since 1995 Poll 1: Is there ever a time when the limpet population is growing? A. yes B. no 20 25

Table 6 shows the population, in thousands, of harbor seals in the Wadden Sea over the years 1997 to 2012. a. Let x represent time in years starting with x=0 for the year 1997. Let y represent the number of seals in thousands. Use logistic regression to fit a model to these data. b. Use the model to predict the seal population for the year 2020. c. To the nearest whole number, what is the limiting value of this model?

Use the table of values you made in part 4 of the example to find the limiting value of the average rate of change in velocity.

Estimate the age of a newly discovered fossil for which the ratio of carbon-14 to carbon-12 is R=1/1014.