1. Blue whales eat tiny shrimp-like animais called krill. One adult blue whale consumes \( 3.6 \) metric tons each day. Which answer choice represents the metric tons of krill an adult blue whale would eat in one week?
A linear function that models data is described below. Find the slope of the model. Then describe what this means in terms of the rate of change of the dependent variable per unit change in the independent variable. The linear function \( f ( x ) = - 0.41 x + 28.6 \) models the percentage of adults in a country who smoked cigarettes, \( f ( x ) \) , \( x \) years after \( 1997 \) .
The slope is \( \square \) . (Type an integer or a decimal.)