Which of the following graphs shows interaction between x1 and x2 in their effects on y?a)b)уX2=1E. bx2=0A. neither a nor bx1B. aC. cannot be determined from the information givenD. a and byx2=0x2=1x1

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Answered: Which of the following graphs shows…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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The following table shows retail sales in drug stores in billions of dollars in the U.S. for years since 1995. Year03691215 Retail Sales85.851108.426141.781169.256202.297222.266 Let y be the retails sales in billions of dollars in x years since 1995. A linear model for the data is y=9.44x+84.182 A) Use the above scatter plot to decide whether the line of best fit, fits the data well. The function is a good model for the data.The function is not a good model for the data B) To the nearest billion, estimate the retails sales in the U. S. in 2011. billions of dollars. C) Use the equation to find the year in which retails sales will be $240 billion. .
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Which of the following graphs shows interaction between x1 and x2 in their effects on y? a) b) B. a y A. neither a nor b x2=1 D. a and b E.R x2=0 C. cannot be determined from the information given x1 y x2=0 x2=1 x1