Can you answer this so i can go to sleep

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.

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Graph the equationy= x+3[tex]y = x + 3[/tex]