anonymous
  • anonymous
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.
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
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anonymous
  • anonymous
Plz help fan and medal!
Agl202
  • Agl202
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.

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anonymous
  • anonymous
thanks
Agl202
  • Agl202
Anytime

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