56 mum number of salmon swimming upstream. otsubor 55. Molars Researchers have determined that the crown length of first molars in fetuses is related to the postconception age of the tooth as L(t) = -0.01t2 + 0.788t - 7.048, where L(t) is the crown length (in millimeters) of the molar t weeks after conception. Find the maximum length of the crown of first molars during weeks 22 through 28. Source: American Journal of Physical Anthropology. Furcel C 60. 61 6