Antonio and Deanna are working at the community pool for the summer. They need to provide a "shock" treatment of 450 grams (g) of dry chlorine to prevent the growth of algae in the pool. Then they add 45 g of chlorine each day after the initial treatment. Each day, the sun burns off 15% of the chlorine. An equation for the chlorine levels can be modeled as: f (x) = 450(1 –0.15)* + 45 How many days will it take for the chlorine levels to be cut in half? a. b. Will the chlorine levels ever deplete completely? Why or why not?

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