Problem: Article: There are two different types of email addresses associated with Facebook, your contact and recovery address, and your Facebook-created email address. Both can be changed from this page, though you can only change your Facebook-generated address once. Contact and recovery email - Click the "Edit" link next to your current email address. Click "Add email" and then enter the email address you want to change to. Open the verification email that is sent to your email account and follow the link to confirm the email account. This will now be the primary contact and recovery email address for your account. Facebook-created email address - Click the "Edit" link next to your Username (this looks like a web address). Your username is used to create your Facebook email address, and changing it will change the email address. You can only change your username once and if it doesn't include your real name Facebook may revert it.
Summary: Sign into your Facebook account. Click the button in the upper-right corner of the page. Select "Settings" to open your account settings. Adjust your email settings.

Problem: Article: Use this method if you know: multiple distances that were traveled; and the amount of time it took to travel each of those distances. For example: If Ben traveled 150 miles in 3 hours, 120 miles in 2 hours, and 70 miles in 1 hour, what was his average speed for the entire trip? The formula is S=dt{\displaystyle S={
rac {d}{t}}}, where S{\displaystyle S} equals the average speed, d{\displaystyle d} equals the total distance, and t{\displaystyle t} equals the total time. To do this, add up the number of miles traveled during the entire trip. Substitute this value for d{\displaystyle d} in the formula. For example, If Ben traveled 150 miles, 120 miles, and 70 miles, you would determine the total speed by adding the three distances together: 150+120+70=340{\displaystyle 150+120+70=340}. So, your formula will look like this: S=340t{\displaystyle S={
rac {340}{t}}}. To do this, add up the times, usually hours, that were spent traveling. Substitute this value for t{\displaystyle t} in the formula. For example, If Ben for 3 hours, 2 hours, and 1 hour, you would determine the total time by adding the three times together: 3+2+1=6{\displaystyle 3+2+1=6}. So, your formula will look like this: S=3406{\displaystyle S={
rac {340}{6}}}. This will give you your average speed. For example:S=3406{\displaystyle S={
rac {340}{6}}}S=56.67{\displaystyle S=56.67}. So if Ben traveled 150 miles in 3 hours, 120 miles in 2 hours, and 70 miles in 1 hour, his average speed was about 57 mph.
Summary: Assess what information you are given. Set up the formula for average speed. Determine the total distance. Determine the total time. Divide the total distance traveled by the total time spent traveling.

Problem: Article: There are a wide variety of QR code generating services that offer more than simple code generator. If you have a paid account, you can track how well a code is performing, make multiple-code campaigns, quickly change and update existing codes, and more. These services come at a price, and most companies offer varying levels of service for different prices. When you are using a paid service, you often have access to more custom QR codes, including logo embedding and unique styles and shapes. Use these tools to help make your QR code stand out. You can create codes that link to coupons, take the user to a store page, distribute business cards, link to your business's Facebook page, or pretty much any other web-based action. Using you QR codes creatively is a major key to a successful QR campaign. Once you have created your codes, start your marketing campaign. There are almost unlimited uses for QR codes, including print ads, websites, corporate business cards, TV commercials, billboards, and much more. Many QR code companies offer print and deployment services for the more expensive packages. The major benefit of using a paid QR service is the tracking functionality that is built in to professional codes. You will be able to track what codes your customers are using, how often they are using them, and which codes are performing better than others. You can use this information to fine-tune your marketing campaign.
Summary:
Find a QR code generator that provides the services you need. Design your QR code. Create codes. Deploy your codes. Track your campaign.