The function P (t) = 100 / (1+400*e^-0.15t) describes how to find the percentage of
families who recycle, P (t), in relation to any time t, where t is the number of
years after 1960.
According to this information, what was the percentage of families who
recycled in 1990? (Round your answer to the nearest hundredth.)
Answer options
A: 18.37
B: 88.12
C: 104.44
D: 100.00
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