Final answer:
Ella pays $18.00 in income tax each week, calculated as 15% of her weekly earnings of $120 from her part-time job at Home Depot.
Step-by-step explanation:
To calculate the income tax Ella pays each week, we must perform a few calculations. First, we calculate her weekly earnings by multiplying her hourly wage by the hours worked per week. Then, we determine the amount of tax she pays by calculating 15% of her weekly earnings.
Weekly earnings: $8.00/hour × 15 hours/week = $120/week
Weekly income tax: 15% of $120 = 0.15 × $120 = $18.00
Therefore, Ella pays $18.00 in income tax each week, which corresponds to option C.