SOLUTION: The park across the street is to be treated to control a new algae that is growing on
top of the grass. After 𝑡 days of treatment the concentration of algae per square
metre i
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-> SOLUTION: The park across the street is to be treated to control a new algae that is growing on
top of the grass. After 𝑡 days of treatment the concentration of algae per square
metre i
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Question 1193793: The park across the street is to be treated to control a new algae that is growing on
top of the grass. After 𝑡 days of treatment the concentration of algae per square
metre is given by 𝐴(𝑡) = 25𝑡
2 − 300𝑡 + 1200. Determine the lowest concentration
of algae in the first week after the treatment. Prove it is the lowest. [5 marks]
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