Consider the function f(c) = 7(x - 5)^(2/3). For this function there are two important intervals: (- ∞, A) and (A, ∞) where A is

Question

Consider the function f(c) = 7(x - 5)^(2/3). For this function there are two important intervals:
(- ∞, A) and (A, ∞) where A is a critical number.
A is _______________
For each of the following intervals, tell whether f(x) is increasing or decreasing.
(- ∞, A): ____________
(A, ∞): _____________
For each of the following intervals, tell whether f(x) is concave up or concave down.
(-∞, A): ____________
(A, ∞):_____________

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