WORLDWIDE SG SUBSCRIPTIONS The number of millions of SC subweriptions worldwide for the years from 2020 and projected to 2025 can be modeled ly the function
f(t)=54.5f^(2) 251t 1
, where
t
equals the number of years after 2020 . Use the quadratic formula to find the year after 2020 when the propected subseriptions will be 7961 million.