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Mathematics, 25.03.2021 19:50 spiritcampbell56

A famous actor updates his fans about his life through a service that allows him to send out text based posts over the internet. The number of his followers can be modified by the function f(d)=4(2^d)-4, where f(d) is the number of followers & d is the number of days since the actor opened his account. How many days after the actor opened his account did he have 252 followers?

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