Solve the problem The local magnitude Mi ( on the Richter scale ) of an earthquake of intensity I is given by My = log I where I is a minimum reference intensity of a " zero - level " earthquake against which the intensities of other earthquakes may be compared How many times more intense is an earthquake of magnitude 5 8 than an earthquake of magnitude 2 9 ? Round to the nearest whole numb est Select one : a Approximately 18 times more intense b . Approximately 481 times more intense C . Approximately 794 times more intense d . Approximately 2 times more intense