Solve the problem.The concentration of a certain gas molecule in the atmosphere serves as an indicator of industrial air pollution. The data in the following table show the relationship of the estimated concentration of the molecule in the atmosphere, in parts per billion (ppb), to the year.Take 1985 as year zero, and determine the linear, quadratic, or cubic function that best fits the data.

A. f(x) = -0.003x2 + 0.12x + 2.19
B. f(x) = -0.002x2 + 0.12x + 2.19
C. f(x) = 0.00001x3 - 0.003x2 + 0.14x + 2.16
D. f(x) = 0.002x + 2.90


Answer: C

Mathematics

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