A marketing specialist determines that when a certain product is released, the number of social media references to it can be modeled by f(t) = 750 + 300 In(t) where t is the number of days since the release. Determine f'(t) = f'(13) = Which of the following is the best interpretation of f(13) = 1519? After 13 days, there are 1519 references. v | Which of the following is the best interpretation of f'(19) = 16? After 19 days, the number of references is increasing 16 per day. Y