joanna signs a contract with a new client. if she helps the client find a property for purchase and the transaction goes through, joanna is entitled to 6% of the sales price, unless the property being sold involves another agent. if that is the case, she will have to share her commission with the other agent, making her half 3%. the new client purchases a property for $375,000. this is a for sale by owner and there is no other agent involved. what is joanna's commission?