Shapes Colors The percentage of employers who allow casual dress every day was 51% in 2001, and has decreased by about 3 percentage points per year. Let p be the percentage of employers who allow casual dress every day at 1 years since 2001 Complete parts a. through d. a. Find the slope of the linear model that describes this situation. What does it mean in this situation? The slope is The percentage of employers who allow casual dress every day has decreased by percentage points per year.