(Answered) Open the file cars and trucksa make a scatter graph of the

Academics

Open the file Cars and Trucks.

a. Make a scatter graph of the data with a trendline, equation, and R² value. Copy and paste your graph here.

b. Is the data linear? Explain why or why not?

c. Use the equation of the trendline to predict how many cars there will be in the US in the year 2013. How confident are you in this prediction? Why?

d. Use the equation of the trendline to predict the number of cars in US in 2050. How confident are you in this prediction? Why?

e. Use the equation of the trendline to predict when there were no cars in the US. How confident are you in this prediction? Why?

Years	Number (millions)

1970	103.45
1975	127.12
1980	149.48
1985	165.10
1990	181.98
1991	181.33
1992	183.67
1993	187.32
1994	190.79
1995	194.13
1996	198.86
1997	199.97
1998	203.17
1999	207.79
2000	212.71
2001	221.82
2002	220.93
2003	222.86
2004	228.28
2005	231.90

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