Help plis and thankyou :)

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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.

Which of the following expressions is equal to 2x^2+8

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b