A study suggests that the extinction rate r(t) of marine animal families during the Phanerozoic Eon can be modeled by the function t) = 3130/(t + 262) for 0 t 544, where t is time elapsed (in millions of years) since the beginning of the eon 544 million years ago Thus, t = 544 refers to the present time, t=540 is 4 million years ago, and so on. Compute the average of RN and LN with N= 10 to estimate the total number of families that became extinct in the periods 230 s ts 430. (Round your answer to three decimal places.) families eBook
