$$ f(x)=3 x^{2}+6 x-45 $$ A. The parabola opens downward and has a maximum value of -48 . B. The parabola opens upward and has a minimum value of (c) What is the range of $$ f(x) $$ ? The range of $$ f(x) $$ is $$ [-48, \infty) $$. (Type your answer in interval notation. Use integers or fractions for any nungibers in the expression.) (d) On what interval is the function increasing? The function is increasing on $$ (-1, \infty) $$. (Type your answer in interval notation. Use integers or fractions for any numbers in the expression.) On what interval is the function decreasing? The function is decreasing on $$ \square $$. (Type your answer in interval notation. Use integers or fractions for any numbers in the expression.)

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Graham Daniels · Accepted Answer

The range of $$ f(x) $$ is $$ [-48, \infty) $$. The function is increasing on $$ (-1, \infty) $$. The function is decreasing on $$ (-\infty, -1) $$.

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