Pre-Calculus quick test 10 questions

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Mathematics

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Need help with 10 questions they are in order 1-10 not all that hard.

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Determine whether the scatter plot could be best modeled by a linear model, a quadratic model, or neither. 10 10 0 0 Determine whether the scatter plot could be best modeled by a linear model, a quadratic model, or neither. The table below shows the sales 5 (in millions of dollars) for jogging and running shows from 1998 to 2004. Year Sales, S (in millions of dollars) 1469 1502 1998 1999 2000 2001 2002 2003 2004 1638 1670 1733 1802 1838 Which of the following scatter plots represents the data with t = 8 corresponding to 1998? 1800 1800 .. 1000 1600 ... 1400 1400 1200 1200 1000 1000 800 800- 600- 800- 400 400- 200 2001 0 4 8 9 10 12 14 A B 2 10 12 14 1800 1800 . 1600 . 1600 1400 . 1400 1200 1200 1000 1000 800 800 800- 600 400 400 200 200 4 B 4 8 10 12 14 2 R 10 12 14 C D The table below shows the sales S (in millions of dollars) for jogging and running shows from 1998 to 2004. Year Sales, S (in millions of dollars) 1998 1999 2000 2001 2002 2003 1469 1502 1638 1670 1733 1802 2004 1838 Use the regression feature of a graphing utility to find a quadratic model for the data with t = 8 corresponding to 1998. Which of the following functions best represents the data using a quadratic model? ОООО f(x) = 64.36x + 1407.14 f(x) = 64.36x +956.64 f(x) = -3.07x2 +88.93x + 1370.29 f(x) = .3.07x2 +131.93x +597.29 The table below shows the sales S (in millions of dollars) for jogging and running shows from 1998 to 2004. Year Sales, S (in millions of dollars) 1998 1999 2000 2001 2002 2003 2004 1469 1502 1638 1670 1733 1802 1838 Use the regression feature of a graphing utility to find a quadratic model for the data with t = 8 corresponding to 1998. According to this model, what will the Sales be in 2010? round to the nearest million dollars. оооо 1214 million dollars 2007 million dollars 1920 million dollars 2243 million dollars The table below shows the sales S (in millions of dollars) for jogging and running shows from 1998 to 2004. Year Sales, S (in millions of dollars) 1998 1999 2000 2001 2002 2003 2004 1469 1502 1638 1670 1733 1802 1838 Use the regression feature of a graphing utility to find a quadratic model for the data with t = 8 corresponding to 1998. Find the coefficient of determination for the quadratic model. Round to four decimal places. OOO 0.9869 0.9807 0.9903 0.9741 O The table below shows the sales 5 (in millions of dollars) for jogging and running shows from 1998 to 2004. Year Sales, S (in millions of dollars) 1998 1999 1469 1502 1638 1670 2000 2001 2002 2003 2004 1733 1802 1838 Use the regression feature of a graphing utility to find a linear model for the data with t = 8 corresponding to 1998. Find the coefficient of determination for the linear model. Round to four decimal places. 0.9869 0.9807 Оооо 0.9903 0.9741 The table below shows the sales 5 (in millions of dollars) for jogging and running shows from 1998 to 2004. Year Sales, S (in millions of dollars) 1998 1999 2000 2001 2002 2003 2004 1469 1502 1638 1670 1733 1802 1838 Use the regression feature of a graphing utility to find a linear model and a quadratic model for the data with t = 8 corresponding to 1998. Find the coefficient of determination for each and use it to determine which is a better model. The following table shows the percent classrooms with internet access from the years 199 1999, Year Number (millions) 1994 1995 1996 1997 1998 1999 3 8 14 27 51 63 Use the regression feature of a graphing utility to find a quadratic model that represents the data with t = 4 corresponding to 1994. Which of the following functions best represents the data using a quadratic model? ОООО f(x) = 1.91X2 + 12.21x + 20.74 f(x) = 1.91x2.12.21x + 20.74 f(x) = 12.63x - 16.53 f(x) = 12.63x - 54.42 The following table shows the percent of classrooms with internet access from the years 1994 to 1999. Year Number (millions) 14 1994 1995 1996 1997 1998 1999 63 Use the regression feature of a graphing utility to find a quadratic model that represents the data with t = 4 corresponding to 1994. What is the coefficient of determination for the quadratic model? Round to four decimal places. 0.9838 0.9919 оооо 0.9685 0.9380
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Explanation & Answer

Hi,Please find the answer to quick problem given in dos file.Thank you.

Answer
From the above figure it is clear that the curve is in the form of quadratic shape of the form
ax^2+bx+c, therefore the quadratic model would be the best fit.

Answer
Neither, the ab...


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