What does x=?.

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2