Final answer:
Andrea could have made more than $37.50 for each jacket she sold.
Step-by-step explanation:
To find out how much Andrea could have made for each jacket, we need to write an inequality to represent the situation. Let's call the amount she made for each jacket as 'x'. The total amount Andrea earned is more than $310, which is the sum of the $160 she made and the commission for each of the 4 jackets she sold. So the inequality can be written as:
160 + 4x > 310
To solve this inequality, we can subtract 160 from both sides:
4x > 150
And then divide both sides by 4 to solve for 'x':
x > 37.5
Therefore, Andrea could have made more than $37.50 for each jacket she sold.