Pls help I need a good grade

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.

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

Hi my sisters and brothers can tell me the answer because i don’t understand the question