MATH!!!

Consider the following where s is in feet and t is in seconds.
s(t) = t3 + 4t2 + 6t + 4

(a) Find v(t).
v(t) =

(b) Find a(t).
a(t) =

(c) Find v(3).

(d) Find a(3).

see above. Please stop posting under different names.

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