For the person who think i am not smart

Wow maybe I need to become your friend maybe some of your good grade will rub of on me lol

Jane has 3 applesshe gives away 23 - 2 = 1jane has 1 apple lefthope this

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.