Answer:
-1
because you are adding up to 0 to get back to the positive.
Had to look for the options and here is my answer.
Starting from the 1950s, both robberies and air pollution has increased and the conclusion that we can say regarding this increase is NOT JUSTIFIABLE. It is not justifiable because population is a different variable and they are not directly related to each other. Hope this helps.
Answer:
the graph of f(x)=×2 called a parabola
