Answer:
10
Step-by-step explanation:
I would say that the median is the best measure for the center as there are two major outliers (16 and 18)
9x^3 - 8x^2 is the answer. to solve this you must distribute the sign across each parenthetical and then add the like terms (all cubed x variables added to cubed variables and all squared x variables added to squared variable)
For f(x) to be a function, the value of x should not be repeated. That is no x value can be more then once.
So the required table is

And for g(x) , not to be a function, we have to repeat x value that is

1/10 because you will do it 10 times