The following table shows data for the cost of natural gas in Maryland (in dollars per Million Btu) for x years since 1990. Year x Price in $ per Million Btu 1990 6.31 1991 6.14 1992 6.32 1993 6.75...

The following table shows data for the cost of natural gas in Maryland (in dollars per Million Btu) for

x
years since 1990.

a. Define the explanatory and response variables for this problem.

b. Use the calculator to obtain the linear regression
line of best fit
for the original prices; round to three decimal places.

Write this prediction equation in the form:

a. In a brief sentence, interpret the
slope in the context of the problem.