{This is a Business Law course question}

The following conversation took place between Maria and Jos: 1 Jos, if you wanted to sell your car, what would you ask for it? 2 Jos replied, I suppose $7,500 would be a fair price. 3 Maria then said, Ill take it if you will put new tires on the front wheels. 4 Jos responded, Sold. Do Maria and Jos have a contract? Why or why not? Fully discuss each of their statements.