Final answer:
Aidan's team must achieve a minimum of $11,000 in sales on Friday to meet the target 5-day average sales of $9000.
Step-by-step explanation:
The question asks us to calculate what minimum sales Aidan's team must achieve on Friday for the 5-day average to be at least $9000. To find this, we first calculate the total sales needed for five days to have a $9000 average by multiplying $9000 by 5 days, which equals $45,000. Now, we add the sales for the first four days: $8200 + $9100 + $9300 + $7400 = $34000. Lastly, we subtract the total sales from the first four days from the $45,000 needed to meet the average, which gives us $45,000 - $34,000 = $11,000. Therefore, Aidan's team must achieve a minimum of $11,000 in sales on Friday.