Answer
Largest open interval over which the function is increasing: $(4, 5)$ or $(6, 7).$
Largest open interval over which the function is decreasing: $(-3, 1)$.
Work Step by Step
Largest open interval over which the function is increasing: $(4, 5)$ or $(6, 7).$
Largest open interval over which the function is decreasing: $(-3, 1)$.