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Question 543336: Your company may wish to release a new e-reader device. Based on data collected from various sources, your company has come up with the following regression equation for the profit of the new e-reader:
Profit = $0.15 × number of e-readers sold – $28
Or, assuming x = the number of e-readers sold, this would be the same regression equation:
Profit = 0.15x – 28
In this case, the values are given in thousands (i.e., the cost of making an individual e-reader will be $150 [0.15 × 1,000], with $28,000 [28 * 1,000] in constant charges).
I need to graph this also.
I have been working on this for days but I am just getting more and more confused. Thank you
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! Profit = $0.15 × number of e-readers sold – $28
Or, assuming x = the number of e-readers sold, this would be the same regression equation:
Profit = 0.15x – 28
In this case, the values are given in thousands (i.e., the cost of making an individual e-reader will be $150 [0.15 × 1,000], with $28,000 [28 * 1,000] in constant charges).
:
To graph this equation y = .15x-28, where y is the profit, x = no.of items all values in 1000's
Make a table of values from this equation from x=10 items to x=1000 items
substitute for x and find y
x | y
--------
10 |-26.5; a loss
100|-13
200|+2; beginning to make a profit at 200 units
500| 47
1000|122
Plot these, should look like this
:
For example if x = 500 units, the equation
y = .15(500) - 28
y = 75 - 28
y = 47, (which is a profit of $47,000), where the green line crosses the red line
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:
:
Did this help un-confuse you in this?
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