A building casts a shadow of \( 40 \) feet on the ground. A wooden figure of a man is placed on the building and casts a shadow an additional \( 10 \) feet beyond the building's shadow. What is the height of the man?
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.)