CAN SOMEONE HELP ME PLEASE ASAP!?

Classify the following triangle check all that apply

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.

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps