Movie Ticket Prices. The average price of a movie ticket has increased linearly over the years, rising from $5.39 in 2000 to $7.89 in 2010 (National Association of Theatre Owners).
Using these two data points, find a linear function, f (x) = mx + b, that models the data.
Let x represent the number of years since 2000. Then use this function to estimate the average price of a movie ticket in 2005 and in 2015?

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