Final answer:
Sarah would have earned $217.50 for her 30 hours of work at the minimum wage rate of $7.25 per hour.
Step-by-step explanation:
If Sarah made regular minimum wage without tips, we would calculate her earnings by multiplying her hourly wage by the number of hours worked. Sarah worked a total of 30 hours and the minimum wage is $7.25 per hour.
Total earnings = Hourly wage × Total hours worked
Total earnings = $7.25 × 30 hours
Total earnings = $217.50
Therefore, without tips, Sarah would have made $217.50 for 30 hours of work at the minimum wage rate.