A marine manufacturer will sell N(x) power boats after spending $x thousand on advertising, as given by N(x) = 960 - 3,810 .55xs30 ANCX) (A) Find N'(x). (B) Find N'(10) and N'(20). Write a brief verbal interpretation of these results. 1000- 900- 800- 70- 600- 500- 300- 200- 100 0+ O 5 10 15 20 25 30 35 Thousands of advertising dolars (A) N'(x) = D (B) N'(10) = (Type an integer or a decimal.) Interpret N'(10). Choose the correct answer below. O A. The marine manufacturer will sell 38.1 power boats after spending $10,000 on advertising. O B. At the $10,000 level of advertising, sales are increasing at the rate of 38.1 boats per $1,000 spent on advertising. O C. The marine manufacturer will sell 10 power boats after spending $38.1 thousand on advertising. O D. At the $38.1 thousand level of advertising, sales are increasing at the rate of 10 boats per $1,000 spent on advertising. N'(20) = (Type an integer or a decimal.) Interpret N'(20). Select the correct choice below and fill in the answer box to complete your choice. O A. The marine manufacturer will sell 20 power boats after spending $ thousand on advertising. OB. The marine manufacturer will sell power boats after spending $20,000 on advertising. pros seog

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