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Mathematics, 03.12.2020 19:00 chewygamerz

The function $c(x) = 72 \times (1.04)^{x}$
models the cost in dollars, c of 1 ounce of a certain chemical used in a laboratory. x represents the number of years since 2010.
Part A: Does the cost of the chemical increase or decrease over time, and by what percentage per year does it do so?

Part B: How much does an ounce of the chemical cost in 2018?

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