The longest a customer can stay at the lone steak restaurant is 2 hours. write an inequality to show how long a customer can stay at the restaurant

The first thing we must do for this case is to define a variable.
 We have then:
 t: time a customer can stay in a restaurant.
 We write now the inequality.
 We have then:

 
 an inequality to show how long a customer can stay at the restaurant is:

For the first question the answer is a, for the second c, for the third d, for the 4th b, for the 5th a