Which of the following represents the sum 3+(-7)? Assume that red tiles represent negative numbers and blue tiles represent positive numbers. three blue tiles plus seven blue tiles
three blue tiles plus seven red tiles
three red tiles plus seven red tiles
three red tiles plus seven blue tiles

The sentence needs a descriptor of exactly "what" will happen at gurley and marina. in this case, it is the light at the intersection turning green. in this case, the sentence could be rewritten as "the light at the intersection of gurley and montezuma will turn green exactly three seconds after the light at the intersection of gurley and marina."