Charles, a self-employed real estate agent, attended a conference on the impact of some new building codes

Question:

Charles, a self-employed real estate agent, attended a conference on the impact of some new building codes on real estate investments. His unreimbursed expenses were as follows:
Airfare ……………………$480
Lodging …………………. 290
Meals …………………… 100
Tuition and fees ………… 650
How much can Charles deduct on his return? \