Final answer:
Mary's total earnings for last week were calculated by adding her hourly wages of $360 (40 hours at $9/hr) to her commission of $278 (5% of $5,560 in sales), totaling $638. This amount is not listed in the provided options.
Step-by-step explanation:
The student's question is asking about solving a practical math problem involving a combination of hourly wages and commission earnings. To find out how much Mary was paid, we need to calculate her earnings in two parts:
1. Hourly earnings: Mary earns $9 per hour for her work and she worked for 40 hours last week.
2. Commission: Mary also earns a commission of 5% on her sales, and her sales last week totaled $5,560.
First, we calculate her hourly earnings:
Hourly earnings = Hourly rate x Hours worked
Hourly earnings = $9/hour x 40 hours = $360
Next, we calculate her commission:
Commission = Sales x Commission rate
Commission = $5,560 x 0.05 = $278
Now, add the hourly earnings and commission to get total earnings:
Total earnings = Hourly earnings + Commission
Total earnings = $360 + $278 = $638
Therefore, the correct answer is not listed in the options provided by the student. Mary's total earnings for last week were $638.