A cosmetics manufacturer’s marketing department has developed a linear trend equation that can be used to predict annual sales of its popular Hand & Foot Cream. Ft = 80 + 15t where Ft = Annual Sales (000 bottles) t = 0 corresponds to 1990 a. Are annual sales increasing or decreasing? By how much? Annual sales are increasing by _____ thousands bottles per year. b. Predict annual sales for the year 2006 using the equation. Annual sales are _____ thousands of bottles.