#20. The rents were increasing most rapidly when t= (Do not round until the final answer. Then round to three decimal pl

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#20. The rents were increasing most rapidly when t= (Do not round until the final answer. Then round to three decimal places as needed.) Save The average monthly rent for a 1000-sq-ft apartment in a major metropolitan area from 1998 through 2005 can be approximated by the function below where t is the time in years since the beginning of 1998. Find the value of t when rents were increasing most rapidly. Approximately when did this occur? f(t) = 1.68451-24.7841³ +62.0712 +6.8323t+1024