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Mathematics 11 Online
OpenStudy (anonymous):

Can someone explain this to me, please? The graph below shows a company's profit f(x), in dollars, depending on the price of erasers x, in dollars, being sold by the company:

OpenStudy (arindameducationusc):

yes upload...

OpenStudy (anonymous):

Give me a moment its not pasting

OpenStudy (anonymous):

Part A: What do the x-intercepts and maximum value of the graph represent? What are the intervals where the function is increasing and decreasing, and what do they represent about the sale and profit? (6 points) Part B: What is an approximate average rate of change of the graph from x = 1 to x = 4, and what does this rate represent? (4 points)

OpenStudy (arindameducationusc):

hmmm...

OpenStudy (anonymous):

I just don't understand what they're asking me to do.

OpenStudy (arindameducationusc):

maxima is the maximum profit of the company in that number of erasers

OpenStudy (anonymous):

So are they just asking what the graph is showing for the first part of the question? I don't understand the second part of the question whatsoever.

OpenStudy (arindameducationusc):

rate of change= dy/dx

OpenStudy (arindameducationusc):

in this case take out the points from the graph, x=1 and x=4

OpenStudy (anonymous):

Okay, then you just average it out, right?

OpenStudy (arindameducationusc):

270-90/4-1. This will give you, dy/dx

OpenStudy (anonymous):

Okay, that's 60, right?

OpenStudy (arindameducationusc):

yes

OpenStudy (arindameducationusc):

good job

OpenStudy (anonymous):

Thank you ^.^

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