Which set or sets does negative 13 belongs?

Which represents the inverse of the function f(x) = 4x? h(x) = x + 4 h(x) = x – 4 h(x) = x h(x) = x

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36