We want to analyze the profit graph and see what the zeros of the function mean. We will see that the correct option is B.
So, the zero of a function is the x-value such that the function is equal to zero.
So, if we have:
y = p(x)
Where y is the profit and x is the sale price of each checkboard, we will have that the zeros are the values of x such that:
y = p(x) = 0
Then the zeros are the values of x such that the profit is equal to zero. A profit of zero means that she does not win nor lose anything, so the correct option is B.
"The zeros at x = 10 and x = 60 are the prices at which she neither makes nor loses money".
If you want to learn more about quadratic equations, you can read:
https://brainly.com/question/1863222