**best answer gets brainliest! ** using a number line, find both the intersection and the union of the following intervals:
a) (−3, +∞) and (4, +∞)
b) (−∞, 2) and [0, +∞)
c) (−∞, 6) and (−∞, 9)
d) [1, 5] and (0, 8]

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

I’m sorry i can’t u