If s represents the displacement and t represents the time for an object moving with rectilinear motion according to the given function, find the instantaneous velocity for the given time.s = 3.8t3 + 4.2t2 + 3.2t + 2.2; t = 2.2
A. 79.056
B. 36.68
C. 48.96
D. 76.856
Answer: D
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