advertising its services by the function The total annual revenue R of a certain resort hotel...

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advertising its services by the function The total annual revenue R of a certain resort hotel is related to the amount of money x the hotel spends on R(x) = -0.004x³ +2.1x² + 4x + 9,500 (0 ≤ x ≤ 400) where both R and x are measured in thousands of dollars. (a) Find the interval where the graph of R is concave upward. (Enter your answer using interval notation.) Find the interval where the graph of R is concave downward. (Enter your answer using interval notation.) What is the inflection point of the graph of R? (x, R(x)) = (b) Would it be more beneficial for the hotel to increase its advertising budget slightly when the budget is $165,000 or when it is $185,000? Ⓒ$165,000 O $185,000 advertising its services by the function The total annual revenue R of a certain resort hotel is related to the amount of money x the hotel spends on R(x) = -0.004x³ +2.1x² + 4x + 9,500 (0 ≤ x ≤ 400) where both R and x are measured in thousands of dollars. (a) Find the interval where the graph of R is concave upward. (Enter your answer using interval notation.) Find the interval where the graph of R is concave downward. (Enter your answer using interval notation.) What is the inflection point of the graph of R? (x, R(x)) = (b) Would it be more beneficial for the hotel to increase its advertising budget slightly when the budget is $165,000 or when it is $185,000? Ⓒ$165,000 O $185,000

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ANSWER a To determine the intervals where the graph of R is concave upward and concave downward we n... View the full answer