A bus driver travels at an average speed of 60 miles per hour on the highway. Once inside the city limit, the bus decreases its speed by 55%

What is the percent of increase for a population that changed from 438,000 to 561,000

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.

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.