1 answer
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To find the unit rate, divide the total earnings by the total hours worked.
For option B: $27.50 / 10 hours = $2.75 per hour
For option C: $22.15 / 30 hours ≈ $0.74 per hour
For option D: $45 / 50 hours = $0.90 per hour
So, the unit rate in the graph that is $8.15 is $2.75 per hour (option B).