p(q) = 2q2 + q + 4
(a) Find the derivative, by using the definition.
p'(q) =

(b) Find the instantaneous rate of change of the function at any value.
p '(q) =

Find the instantaneous rate of change of the function at the value
q = 9.

p '(9) =

(c) Find the slope of the tangent at the value
q = 9.

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