Answer:
Nadia made a commission of 768 last week
The amount she made in 2011 is 40,045.824
Explanation:
What is a commission?
A commission is the fee got for the services, given by the percentage of the total worth.
If Nadia gets a 12% commission for $6400,
Commission = percentage × worth of stock
= 12% × 6400
= 768
There are 52.143 weeks per year.
The amount of commissions she made in 2011 is,
768 × 52.143 = 40,045.824
Hence, Nadia made a commission of $852 for $6400 worth of stocks. If she averages the same amount each week, Nadia made a commission of $40,045.824