Consider the function below. f(x)=-3x+6x+6 Exercise (a) Find the critical numbers of f. Step 1 Differentiate...

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Consider the function below. f(x)=-3x+6x+6 Exercise (a) Find the critical numbers of f. Step 1 Differentiate f(x)=-3x + 6x + 6 with respect to x. f'(x)= = Submit Skip (you cannot come back) Exercise (b) Find the open intervals on which the function is increasing or decreasing. Click here to begin! Exercise (c) Apply the First Derivative Test to identify the relative extrema. Consider the function below. f(x)=-3x+6x+6 Exercise (a) Find the critical numbers of f. Step 1 Differentiate f(x)=-3x + 6x + 6 with respect to x. f'(x)= = Submit Skip (you cannot come back) Exercise (b) Find the open intervals on which the function is increasing or decreasing. Click here to begin! Exercise (c) Apply the First Derivative Test to identify the relative extrema.