postconception age of the tooth and is approximated as L(t) = - 0.01t2 + 0.784t - 7.041, where L(t) is the crown length, in millimeters, of the molar t weeks after conception. Answer parts a-c. I' Pulp4 Distal % Mesial The crown length of rst molars in fetuses is related to the '7 Crown length A' a. Find the average rate of growth in the crown length during weeks 20 through 24. Which of the following is the correct exprl v L(24) L(20) L(24) L(20) \" A' 24 20 B' 24 L(24) L(20) L(24) L(20) 3' 20 D' 24 _ 20 The average rate of growth in crown length during weeks 20 through 24 is : (Type an integer or a decimal.)