The solution of the system represents "the number of sweatshirts for which cost and income are equal" Option D
This is further explained below.
Let y_1 represent the revenue from selling " x" sweatshirts and y_2 represent the cost of producing " x " sweatshirts, solving the system:
[tex]y_1=35 x\\\\y_2=-0.05(x-400)^2+9.492\\\\y_1=y_2\\\\35 x=-0.05(x-400)^2+9,492\\\\-0.05(x-400)^2-35 x+9,492=0\\\\[/tex]
The answer to the equation in the previous paragraph is the number of sweatshirts for which the cost of manufacturing y 2 is equivalent to the income obtained from sales.
In conclusion, the solution represents the number of sweatshirts for which cost and income are equal.
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