Tags are very common in spoken English, and have many functions. One of the common functions is to start a conversation or help keep it going. The two basic rules about tag questions are:1  If the statement is negative, the tag must be positive.ags are very common in spoken English, and have many functions. One of the common functions is to start a conversation or help keep it going. The two basic rules about tag questions are:
The average cost for a community to fluoridate its water is estimated to range from approximately $0.50 a year per person in large communities to approximately $3.00 a year per person in small communities. For most cities, every $1 invested in water fluoridation saves $38 in dental treatment costs.55 âFor most cities, every $1 invested in water fluoridation saves $38 in dental treatment costs.â It can be calculated from these data that the average lifetime cost per person to fluoridate a water system is less than the cost of one dental filling.
Here are some Typical Water Well Pump Prices and Costs. Water pressure tank prices (online) run from about $80 (SearsÂ® 42-gallon) to $150. to $750. (Well Matâ¢ or Well-X-Trolâ¢) for the water pressure tank itself, not including installation cost. Submersible well pump prices (online) run from about $200. to $300. (Flotec and Wayne) to $500 (Flint Walling/Star) to $870 (GrundfosÂ® 30 GPM) In the building, a deep well 2-line jet pump is about $250.