a. Prepare a forecast for September. b. Assuming actual September usage of 92 percent, prepare a forecast for October usage. 4. An electrical contractor's records during the last five weeks indicate the number of job requests: Week 1 2 3 4 5 Requests 20 22 18 21 22 Predict the number of requests for week 6 using each of these methods: a. Naive b. A four-period moving average c. Exponential smoothing with a .30; use 20 for week 2 forecast 5. 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. F = 80+ 15t where F,- Annual sales (000 bottles) t is in years a. Are annual sales increasing or decreasing? By how much? b. Predict annual sales for year 6 using the equation. 6. From the following graph, determine the equation of the linear trend line for time-share sales for Glib Marketing, Inc. Annual Sales, Glib Sales, Inc. De piers were fed to se pooches Sales (units) 600 500 400 300 200 100 Delta Works!l LG The Delts Works a series of contraction projects is the North Pele Confe to protect the teary from the erosion of rising seo levels