Answer: Therefore, the man's gross earnings for the week amount to $567.15.
Explanation: To calculate the man's gross earnings for the week, we need to consider both his salary and commission based on his sales.
First, let's calculate the commission he earned based on his sales:
Sales = $7823
Commission rate = 5%
Minimum sales threshold for commission = $2020
Commission earned = (Sales - Minimum sales threshold) * Commission rate
= ($7823 - $2020) * 0.05
= $5803 * 0.05
= $290.15
Next, let's calculate his total gross earnings by adding his salary and commission:
Salary = $277
Gross earnings = Salary + Commission earned
= $277 + $290.15
= $567.15