Please help branliest if you help me answer right

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.

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.