Final answer:
Tracy's weekly earnings increased by $26.00 after receiving a $1.30 hourly raise, as she works 20 hours a week; thus, her new wage is $9.85 per hour.
Step-by-step explanation:
The subject of this question is Mathematics, and it pertains to High School level content. The question asks about calculating the weekly increase in earnings due to a raise in hourly wage. Tracy originally earns $8.55 an hour and works 20 hours a week. After receiving a $1.30 hourly raise, she will now make $8.55 + $1.30 = $9.85 per hour.
To find out how much more she will make each week with her raise, we multiply the raise by the number of hours she works per week:
Increased wage per week = Raise per hour × Hours worked per week
Increased wage per week = $1.30 × 20 hours
Increased wage per week = $26.00
So, with the raise, Tracy will earn an additional $26.00 each week.