1. Climate change (global warming) is a current hot topic. How rapidly is the Earth's average temperature increasing? What might the consequences be? What is the cause? What might we do about it?

The table below shows the average global temperature, in degrees Fahrenheit, for the years 1885-2015.

Year	Temperature
XXXX	Degrees Fahrenheit
1885	56.75
1895	56.75
1905	56.68
1915	56.91
1925	56.82
1935	56.93
1945	57.22
1955	56.98
1965	57.02
1975	57.18
1985	57.34
1995	57.96
2005	58.37
2015	58.62

1. Construct a scatter plot of the data, using 1880 as year 0, and output as average temperature. Copy your scatter plot or provide a copy of the graph.

b.) Use your calculator to find a linear model for this data set, using T for the temperature and t for the number of years since 1880. This is the line of best fit. Copy the linear model on your project. Approximate to two decimal places where applicable.

1. What is the slope of the regression line rounded to two decimal places. Convert it to a fraction. Now use both numbers in a complete sentence to interpret the practical meaning of the slope in the context of the situation. (Describe how the change in input affects the change in output don't forget to include the units).

1. Use your linear model to estimate the average global temperature in 2050?