Austin needed to get his computer fixed. He took it to the repair store. The technician at the store worked on the computer for 4.5 hours and charged him $126 for parts. The total was $553.50. Which equation could be used to determine xx, the cost of labor per hour?

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ιт ιѕ (9χ^5+10)(81χ^10-90χ^5+100)

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okay, what do you want us to do?

anyway, the cost of labor per hour for repair shop b is $50 per hour.

the repair bill for your car at repair shop b is $553

the parts for repair shop b cost is   $497.07

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