1) Find the derivative 
and 
.
2) The equation of the tangent line is
, so at point (2,6): 
and
-the equation of the tangent line at point (2,6).
2) The equation of the tangent line is
It takes 8 minutes for water from a tap to fill up a 30-gallon tank. What is the rate of water flowing from the tap per minute?
2 answers:
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