In a certain memory experiement, subject A is able to memorize words at a rate given by m'(t) = 0.007t²+ 0.2t . In the same memory experiment, subject B is able to memorize at the same rate given by M'(t) = 0.004t²+ 0.2t. how many more words does subject B memorize from t = 0 to t = 14 (during the first 14 minutes)? round to the nearest word.