Final answer:
To determine the cost of labor per hour, set up the equation 3.75x + 119 = 400.25 and solve for x.
Step-by-step explanation:
To determine the cost of labor per hour, we can set up an equation based on the given information. Let xx represent the cost of labor per hour.
According to the problem, the technician worked on the computer for 3.75 hours and charged $119 for parts, which means the total cost for labor plus parts is $400.25.
We can set up the equation as follows: 3.75x + 119 = 400.25.
To solve for xx, we need to isolate it on one side of the equation. First, subtract 119 from both sides: 3.75x = 400.25 - 119.
Next, simplify the right side of the equation: 3.75x = 281.25.
Finally, divide both sides of the equation by 3.75: x = 281.25 / 3.75.
Therefore, the cost of the labor per hour is $75.