It means the scatter plot is a line with negative slope. The relation is perfectly described by a linear equation.
Factor out the gcf
4x(x^2-16)
Then factor the inner binomial (difference of squares)
4x(x+4)(x-4)
Final answer: 4x(x+4)(x-4)
The conclusion is incorrect due to the fact that the sample is biased
Take a random sample of 50 from a student population, such as an english class
What am I dividing $15.60 by..?