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Sagot :
The total cost of repair of the computer, includes the cost of replacement parts and labor
The general form of the equation that can be used to determine x is presented as follows; C = p + t·x
Where;
C = Total cost = $320.25
p = The cost of parts = $114
t = The time = 2.75 hours
- The equation that can be used to determine x is; 320.25 = 114 + 2.75·x
- Cost of labor per hour is $75
Reason:
The known parameter for the cost of the repair are;
The time it took the technician at the store to work on the computer, t = 2.75 hours
The amount the technician charged for the parts, p = $114
The total cost of the repair, C = $320.25
Required:
Write and solve an equation which can be used to determine x, the Cost of labor per hour
By observation, we have;
The total cost, C = p + t × x
C = 320.25
p = 114
t = 2.75
The equation that can be used to determine x, is therefore;
- 320.25 = 114 + 2.75·x
Solving, we get;
[tex]x = \dfrac{320.25 - 114}{2.75} = 75[/tex]
Cost of labor per hour, x = $75
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