A cosmetics manufacturers marketing department has developed a linear trend equation that can be used to predict annual sales of its popular Hand & Foot Cream. Ft = 90 + 16t Where Ft = Annual sales (000 bottles) t is in years (All answers should be expressed in units and not thousands of units.)

a. Are annual sales increasing or decreasing? By how much?

b. Predict annual sales for year 8 using the equation.