World Population The total world population is forecast to be P(t) = 0.00075t3 − 0.0716t2 + 0.99t + 6.04    (0 ≤ t ≤ 10) in year t, where t is measured in decades, with t = 0 corresponding to 2000 and P(t) is measured in billions. World population is forecast to peak in what year? Hint: Use the quadratic formula. (Remember that t is in decades and not in years. Round your answer down to the nearest year.)   __________   At what number will the population peak? (Be sure to use the value of t found in part (a). Round your answer to two decimal places.)   ___________ billion

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