The table shows the wavelength of the sound produced Using the exponential regression model, which is the by keys on a piano x keys away from the A above best prediction of the wavelength of the key that is 8 middle C. above the A above middle C? Sound Wavelength 49.31 cm Number of keys above the Wavelength 49.44 cm A above middle C (cm) 0 78.41 49.73 cm 69.85 49.78 cm 65.93 55.44 10 44.01