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The current cost of a -inch HDTV is $ and decreasing by % per year.

  1. What is the multiplier?

    If the cost decreased by % each year, the new cost would be 85% of the previous year.

  2. What will a 55-inch HDTV cost in four years?

    In one year the cost will be .
    In two years the cost will be .
    Continue this pattern.

  3. Write an equation to calculate the cost in years. What does each of the factors in your equation represent?