Question 284333: You have been asked to analyze the cost of creating applications for the ePhone and SmrtPhone. The cost, C, in dollars, for creating an application for the ePhone is given by the function C(x) = 4x + 92 and the cost for creating an application for the SmrtPhone is given by the function C(x) = 3x + 108, where x is the number of hours needed to complete the application. Answer the following questions and be sure to show work on the steps for calculating.
What is the cost for both the ePhone and SmrtPhone if 28 hours is used?
If the cost of creating the application is $300, compare the hours that would be needed for the ePhone application versus the SmrtPhone?
Found 2 solutions by richwmiller, stanbon:
Answer by richwmiller(17219)   (Show Source):
You can put this solution on YOUR website! C(x) = 3x + 108
C(x) = 4x + 92
First question: plug in 28 for x and solve each equation for C(x)
Second question: plug in 300 for C(x) and solve each equation for x
Answer by stanbon(75887)  (Show Source):
You can put this solution on YOUR website! You have been asked to analyze the cost of creating applications for the ePhone and SmartPhone.
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The cost, C, in dollars, for creating an application for the ePhone is given by the function C(x) = 4x + 92
The cost for creating an application for the SmrtPhone is given by the function C(x) = 3x + 108, where x is the number of hours needed to complete the application.
Answer the following questions and be sure to show work on the steps for calculating.
What is the cost for both the ePhone and SmrtPhone if 28 hours is used?
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ePhone: C(28) = 4*28+92 = $204
StPhone: C(28) = 3*28+108 = $192
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If the cost of creating the application is $300, compare the hours that would be needed for the ePhone application versus the SmrtPhone?
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Neither is $300
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Cheers,
Stan H.
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