Which of the following expressions would NOT be used to respond to somebody who thanks you for something?

__________ growth makes sense when good opportunities can be found outside the present businesses.

Restaurant equipment is generally thought to have a life expectancy of about __________ years.

A hotel worker tells a prospective guest about the lowest room rate at the hotel. The person says that he's surprised there aren't any cheaper rooms. In this situation, which response should a hotel worker use?

A customer sits down for lunch and complains that the cutlery isn't clean. In this situation, which response should a restaurant or bar worker use?

Which is an appropriate answer to someone who makes a request that you're not sure you can fulfill?