5. (-/3 Points] DETAILS LCALCCONS 2.4.008. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Annual U.S. factory sales of consumer electronics goods to dealers from 1990 through 2001 can be modeled as (2) -0.03883-0.495 + 5.698 +43.6 where output is measured in billion dollars and t is the number of years since 1990. (a) Numerically estimate the derivative of s when billion dollars per year (b) Interpret the answer to part (a). increasing by approximately $ At the beginning of year Need Help? -30. (Round your answer to one decimal place.) annual U.S. factory sales of consumer electronics goods to dealers were billon per year. 6. [-/5 Points] DETAILS LCALCCONS 2.4.011. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The average weekly sales for a clothing store between 2004 and 2008 are given below. Average Weekly Sales for a Clothing Store Thousand Year Dollars 2004 38.85 2005 53.65 2006 63.9 2007 2008 72.17 68.16 (a) What behavior suggested by a scatter plot of the data indicates that a quadratic model is appropriate? Otwo concavities with no change in direction a single concavity with a change in direction Oa single concavity with no change in direction no concavities (b) Align the input so that e-0 in 2000. Find a function for quadratic model for the data that gives the average weekly sales for the clothing store in thousand dollars, with data from 455 8. (Round all numerical values to three decimal places.) (1)- (c) Numerically estimate the derivative of the model from part (b) in 2007 to the nearest hundred dollars. $ per year (d) Interpret the answer to part (c). In 2007, the average weekly sales for the clothing store were -Select- by 5 per year, Need Help?