An automobile dealer wants to advertise that for $29,999 you can buy a convertible, a two-door, or a four-door model with your choice of either wire wheel covers or solid wheel covers. How many...

An automobile dealer wants to advertise that for $29,999 you can buy a convertible, a two-door, or a four-door model with your choice of either wire wheel covers or solid wheel covers. How many different arrangements of models and wheel covers can the dealer offer?