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anonymous

  • one year ago

A biologist created the following graph to show the relationship between the temperature of water (x), in degrees Celsius, and the number of insect larvae (y) in the water: graph of y equals minus 2 times the square of x plus 20 times x plus 400 What does the peak of the graph represent? The number of larvae is greatest at 450 degrees Celsius. The number of larvae is greatest at 5 degrees Celsius. The least number of larvae in the water is 450. The least number of larvae in the water is 5.

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  1. anonymous
    • one year ago
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  2. anonymous
    • one year ago
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    Plz help fan and medal!

  3. Agl202
    • one year ago
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    y = -2x^2 + 20x + 400 y = -2(x^2 - 10x) + 400 y = -2(x^2 - 10x + 25) + 400 + 50 y = -2(x - 5)^2 + 450 The peak occurs at x = 5 so the answer is B.

  4. anonymous
    • one year ago
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    thanks

  5. Agl202
    • one year ago
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    Anytime

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