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 = 60 + 13t
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 or decreasing) by ____________ thousands bottles per year.
b. Predict annual sales for the year 2006 using the equation.
Annual sales are _____________ thousands of bottles.