5. The following table shows the number of females who entered a trade program in Canada in selected years after \( 1990 .\) a. Using technology graph and find the equation of the cubic regression.
\(m = 1.95428 b = - 7.56518 \)
\( d = 7181.15 \)
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.)