2x + 4y = 160
1x + 4y = 72

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

This question awards 100 ! i really don’t want to fail i will also mark you !

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?