The total earnings from her part time job for the week is calculated by multiplying the number of hours worked by the hourly rate.
Total part time hours worked for the week

Hourly rate for the part time job is $7.25
Total amount from part time job in dollars

Niah's extra income earned from dog walking is organized in the given table attached.
From the table, Niah's total earning from dog walking is $90.00
The total amount of earning Niah had this week in dollars

Therefore the correct answer is option D.