A certain company's main source of income is selling socks.The company's annual profit (in millions of dollars) as a function of the price of a pair of socks (in dollars) is modeled by:P(x)=−3(x−5)2+12What sock price should the company set to earn a maximum profit?dollars
Q. A certain company's main source of income is selling socks.The company's annual profit (in millions of dollars) as a function of the price of a pair of socks (in dollars) is modeled by:P(x)=−3(x−5)2+12What sock price should the company set to earn a maximum profit?dollars
Identify Function Type: Identify the type of function given for the profit P(x). The function P(x)=−3(x−5)2+12 is a quadratic function in the form of P(x)=a(x−h)2+k, where (h,k) is the vertex of the parabola.
Determine Parabola Vertex: Determine the vertex of the parabola.Since the coefficient of the squared term is negative (−3), the parabola opens downwards, which means the vertex represents the maximum point on the graph. The vertex (h,k) can be found directly from the equation P(x)=−3(x−5)2+12, which gives h=5 and k=12.
Find Sock Price: Find the sock price for maximum profit.The sock price that corresponds to the maximum profit is the x-value of the vertex, which is h=5 dollars.
Check Result: Check the result.Since the parabola opens downwards and the vertex is the highest point, the sock price of $5 will indeed give the maximum profit according to the model.
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