The number of mosquitoes in Brooklyn (in millions of mosquitoes) as a function of rainfall (in centimeters) is modeled bym(x)=−x(x−4)What amount of rainfall results in the maximum number of mosquitoes?centimeters
Q. The number of mosquitoes in Brooklyn (in millions of mosquitoes) as a function of rainfall (in centimeters) is modeled bym(x)=−x(x−4)What amount of rainfall results in the maximum number of mosquitoes?centimeters
Identify Quadratic Function: To find the amount of rainfall that results in the maximum number of mosquitoes, we need to analyze the given quadratic function m(x)=−x(x−4), which is a parabola that opens downwards (since the coefficient of x2 is negative). The maximum value of this function occurs at its vertex.
Find Vertex Formula: The vertex of a parabola in the form of f(x)=ax2+bx+c can be found using the formula x=−2ab. In our case, the function m(x)=−x(x−4) can be rewritten as m(x)=−x2+4x. Here, a=−1 and b=4.
Calculate Vertex: Using the vertex formula x=−2ab, we substitute a=−1 and b=4 to find the x-coordinate of the vertex, which will give us the amount of rainfall that maximizes the number of mosquitoes. So, x=−2∗(−1)4=−−24=2.
Determine Maximum Rainfall: The x-coordinate of the vertex is 2 centimeters. This means that 2 centimeters of rainfall results in the maximum number of mosquitoes according to the model m(x)=−x(x−4).
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