Write an article based on this "Learn more about different types of contacts. Wear contacts as directed. Learn more about risk factors associated with wearing contacts. Check your medical history. Keep your contacts clean. Notice changes in your eyes."
article: Whether your contact lenses are prescribed to correct your vision, or whether they're decorative, your contacts will be one of many kinds. Most contacts are soft contacts, which means that they are flexible. Soft lenses allow oxygen to pass through to the cornea. Soft contacts are disposable, and can be worn for one day (daily disposable), 2 weeks, or 4 weeks. Lenses can also be hard, which means they are rigid and breakable. These contacts are also known as RPGs or "rigid gas permeable." Contacts can also be bifocal. Even though contacts can be worn for many days, it's best to remove them each night as you sleep. RPGs may be the best choice of contact lenses for someone with allergies. Even though RPGs once had a reputation for "popping out" of the eye, newer models have greatly improved the comfort level and sustainability. Soft lenses have a greater chance of sliding up underneath the eyelid, or getting folded while still in the eye. People who wear contact lenses have an increased risk of infection to the cornea. Wearing contacts in a way other than prescribed - e.g. wearing daily contacts for a week, or wearing them overnight - may result in temporary, or even long-term damage to the cornea. Soft, extended-wear contacts have the highest risk of developing protein build-up on the lens. This may result in lens-related allergies. Infections often result from poor lens cleaning as well as misuse. Even though contacts are popular and easy to wear, there are still some hazards associated with wearing contact lenses. Eye infections, scratching the cornea, and allergic reactions as demonstrated by itchy, red, watery eyes are among the most common results from wearing contacts, even if you follow all the guidelines. If you choose to wear contacts, you need to also be able to commit to taking care of the contact lenses as well as your own eyes. If you're wearing contacts as a decorative accessory, make sure your lenses are FDA-approved. Anyone selling contact lenses is required to get a prescription from your doctor - even if you don't require prescriptive lenses! The reason for this is that contact lenses must be fit to your eye, and contacts that don't fit properly could result in damaging your eye or even causing blindness. If you're someone who frequently gets eye infections, has chronically dry eyes, or serious allergies, you may not benefit from wearing contact lenses. If you work in an area with a lot of particle matter in the air, you might also want to avoid contacts. If you're the kind of person who has a hard time doing the daily washing and caring for contacts that they require, you might want to avoid wearing contacts. Wearing contact lenses means that you'll have to take them out in the evening. If you have a schedule where your evenings are greatly varied, you might want to stick to glasses. If you're planning to just wear decorative colored lenses, make sure you bring a case to store them in when your eyes are tired and you need to remove your lenses. Always wash your hands well with soap and water before touching your contact lenses. It's recommended that you clean your contact lens case every day, and change your case at least once every 3 months. Never share your colored contact lenses with someone else. Homemade contact lens cleaning solutions have been linked to serious eye infections. Always purchase FDA-approved saline and cleaning solution. Take out your contact lenses and call your doctor if you start to notice signs of eye discomfort or distress. If your eyes start to hurt, itch, or become red and watery, you may have an eye infection or injury. If your eyes may become overly sensitive to light, or you have blurry vision, call your doctor. Your eye may feel scratchy, as if there's something stuck in it. This can be an indication of a scratch on your cornea. Always start by taking your contact out when you notice these signs.

Write an article based on this "Compare investment opportunities by their NPV. Use PV = FV / (1+i)t to find present and future values. Research valuation methods for more accurate NPVs."
article: Finding the NPVs for multiple investment opportunities allows you to easily compare your investments to determine which are more valuable than others. In general, the investment with the highest NPV is the most valuable because its eventual payout is worth the most in present dollars. Because of this, you'll usually want to pursue the investments with the highest NPVs first (assuming you don't have enough resources to pursue every investment with a positive NPV). For instance, let's say that we have three investment opportunities. One has an NPV of $150, one has an NPV of $45, and one has an NPV of -$10. In this situation, we'd pursue the $150 investment first because it has the greatest NPV. If we have enough resources, we'd pursue the $45 investment second because it's less valuable. We wouldn't pursue the -$10 investment at all because, with a negative NPV, it will make you less money than investing in an alternative with a similar level of risk. Using a slightly modified form of the standard NPV formula, it's possible to quickly determine how much a present sum of money will be worth in the future (or how much a future sum of money is worth in the present). Simply use the formula PV = FV / (1+i)t, where i is your discount rate, t the number of time periods being analyzed, FV is the future money value, and PV is the present value. If you know i, t, and either FV or PV, it's relatively simple to solve for the final variable. For instance, let's say we want to know how much $1,000 will be worth in five years. If we know that, at bare minimum, we can get a return rate of 2% on this money, we'll use 0.02 for i, 5 for t, and 1,000 for PV and solve for FV as follows: 1,000 = FV / (1+0.02)5 1,000 = FV / (1.02)5 1,000 = FV / 1.104 1,000 1.104 = FV = $1,104. The accuracy of any NPV calculation basically depends on the accuracy of the values you use for your discount rate and your future cash inflows. If your discount rate is close to the actual return rate you can get on your money for an alternative investment of similar risk and your future cash inflows are close to the amounts of money you'll actually make from your investment, your NPV calculation will be right on the money.

Write an article based on this "Let your rabbit roam in a designated room. Protect electrical wiring. Keep your rabbit from chewing on trim and furniture. Give your rabbit toys to chew on."
article:
Choose one room to let your rabbit roam around freely in. This room needs to meet all your rabbit's needs, so it needs a litter box, a hay feeder, food dishes, and water bowl. Inside the room, you can set up cardboard houses, bunny condos, puppy pens, or rabbit cages. One of a rabbit's favorite activities is chewing. In the bunny room, cover up wires or remove them completely. You can place electrical cords in hard plastic tubing split lengthwise with the cords tucked inside. Place cords behind woodwork or trim, wrap them in spiral wrap or use concealers to keep them out of sight. Since your rabbit will love to chew, she will chew on trim, door edges, furniture, wallpaper, sheetrock, and carpet if you let her. Protect the room by putting boards over places your bunny can chew that she shouldn't. To keep your rabbit from burrowing up into the furniture, put cardboard or 2x4s under it. Cover the wall with clear plastic panels to keep the rabbit from chewing. To discourage your rabbit from chewing on inappropriate objects, give her an acceptable chewing toy if she tries to chew on something else. Make sure your rabbit has a lot of toys and objects to chew on. You can leave out alfalfa cubes, cardboard tubes stuffed with grass hay, fresh apple, willow, or aspen branches, or rolled up cotton towels. You can make homemade toys for your rabbit, like a cardboard box stuffed with hay, cardboard rolls from paper towels, gift wrap, or toilet paper, or multiple cardboard boxes lined up to make a rabbit tunnel. You can also stuff a paper sack with shredded newspaper (and a few treats) to give your rabbit a digging adventure.