To find such critical points, you have to differentiate the function and let the derivative equal zero. Since this function is y written in terms of x, but implicitly, you must use implicit differentiation. Do you know how to do that?
Two correct answers:
9 + x
x + 9
Or you can say
x - -9
or
9 - -x
Answer:
B. x² - 13x + 42
Step-by-step explanation:
The median is 52, so the answer would be B.