Janine is considering buying a water filter and a reusable waterbottle rather than buying bottled water. Will doing so save hermoney?
First, determine what information you need to answer this question,then click here to display that info (along with other info).

• How much water does Janine drink in a day? She normally drinks6 bottles a day, each 16.9 ounces.
• How much does a bottle of water cost? She buys 24-packs of 16.9ounce bottles for $3.19.
• How much does a reusable water bottle cost? About $10.
• How long does a reusable water bottle last? Basically forever(or until you lose it).
• How much does a water filter cost? How much water will theyfilter?
  • A faucet-mounted filter costs about $28 and includes one filtercartridge. Refill filters cost about $33 for a 3-pack. The box sayseach filter will filter up to 100 gallons (378 liters)
  • A water filter pitcher costs about $22 and includes one filtercartridge. Refill filters cost about $20 for a 4-pack. The box sayseach filter lasts for 40 gallons or 4 months
  • An under-sink filter costs $130 and includes one filtercartridge. Refill filters cost about $60 each. The filter lasts for500 gallons.

Which option is cheapest over one year (365 days)?
The cheapest option saves her $______ over a year.
Give your answer to the nearest cent. Pro-rate the costs ofadditional filters (so if you only use part of a filter, only countthe corresponding fraction of the filter cost).