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October 23, 2014

Homework Help: calculus

Posted by maryam on Sunday, February 24, 2008 at 8:06pm.

You are working as assistant to a major movie producer from Hollywood, but mainly you look after pre-release film publicity. You are an old hand at publicity, having worked in several production companies before. Based on previous experience you have developed a model for the most effective expenditure of money in radio and television advertising in the last ten days prior to the release of the film. The advertising campaign starts with massive media blitz ten days before the release of the film. Money spent, (in 100,000 dollars) as a function of the number of days after the initial media blitz, , is given by:

M(n)=(n^3-48n+1100)/200

The producer, your boss, comes in and asks you to prepare a report on the funding needs for Radio and Television advertising in the days between the media blitz and the release, highlighting the rate at which spending goes up or down each day. In particular he seems interested in the rate at which spending will change in the 'th day. To estimate this,using your formula, calculate the average rate of change for each of the following intervals (in 100,000 dollars per day):

Average rate of change on [0,1]:
Average rate of change on [1,2]:
Average rate of change on [2,3]:
Average rate of change on [3,4]:
Average rate of change on [4,5]:
Average rate of change on [5,6]:
Average rate of change on [6,7]:
Average rate of change on [7,8]:
Average rate of change on [8.9]:
Average rate of change on [9,10]:
Why was the manager interested in the 'th day?
a)NO reason
b)Spending starts increasing day after day
c)the day is peak of expenditures
d)Spending starts decreasing day after day

Your best estimate for the instantaneous rate of change at the 4'th day:

please help with this questions...i really dont get how to slve!
mary

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