Answer:
y=|x|
domain= (-∞,+∞) range= [0,+∞)
y=-|x|
domain= (-∞,+∞) range= [0,-∞)
y=|x|-6
domain=(-∞,+∞) range= [-6,+∞)
y=4-|x|
domain= [-∞,+∞) range= [4,-∞)
126,945 to the nearest ten thousand is 130,000.
Neither, turn 80% into a decimal, 0.8, then multiply.