Question

The percentage, P(t), of information memorized by Bridget is a function of the time, t,

in minutes, of the length of a lecture.
P(t) = t-t²
50
Bridget's friend wanted to determine the percentage memorized at various times and
evaluated the four values: P(40), P(50), P(60), P (70).
During what length of a lecture did Bridget memorize the most information?
40 min
O 50 min
60 min
O 70 min

Answer 1

P(40) = 64, P(50) = 70, P(60) = 72,

P(70) = 70

60 minutes is correct.