Suppose the graph of a polynomial function never crosses the x axis. What mush be true about the degree of the polynomial

Answera major is needed to earn a bachelors;

Yes it can cause that

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.