Write an article based on this "Choose where you want the numbers to change. Click the Page Layout tab. Click Link to Previous. Click the Page Number button in the Header & Footer category."
article: Place your cursor at the beginning on the page where you want to change the page numbering. In the Page Setup category, click the Breaks button. Select Next Page from the list of options. On the first page of the newly create section, double-click the either the header or footer to open the Design tab. This is located in the Navigation category. This will separate the two sections, letting the header and footer change. Headers and footers have separate links, so depending on where your page number is located, you will need to unlink the correct section. Insert your new page numbers. Use the Page Number Format window to change the format of the numbers. You c an also choose whether to continue the numbering from the previous section, or start new numbering.

Write an article based on this "Test your soil's pH level Buy soil additive from a gardening supply store. Spread additive using a lime or fertilizer spreader. Monitor soil and reapply additive annually or as needed."
article: to determine which additive you need. The most common way to add calcium to soil is to use a soil additive. The two most common soil additives to raise calcium levels are lime and gypsum. Before choosing one, test your soil’s pH to figure out which one will work best for your needs.  If you need to raise your pH, use lime.  If you need your pH to remain stable, use gypsum. You can buy gypsum or lime at most gardening supply stores. For instance, you will usually be able to find them in the gardening section of stores like Home Depot and Lowes. You can also buy them online from Amazon and other stores. If you need to spread just a bit of additive, use your hands (just make sure you wash them before touching anything else!). But if you are trying to cover a larger area you may want to use a fertilizer spreader to be more efficient.  The amount of additive you need to apply will depend largely on your needs and your soil pH level. Research your needs before determining the amount you want to use.  If you are using lime, till it into the soil so that it mixes in thoroughly.  If you are using gypsum, spread it over the surface of the soil and then water it in until the soil absorbs it. You might only need to add more lime or gypsum once every year, but keep a close eye on your soil to determine how often you need to add calcium. If your soil is used to produce large amounts of crops, for instance, you may need to add calcium more frequently.

Write an article based on this "Rearrange the explicit formula to solve for other variables. Find the first term of a sequence. Find the length of a sequence."
article:
Using the explicit formula and some basic algebra, you can find several pieces of information about an arithmetic sequence. In its original form, a(n)=a(1)+(n−1)d{\displaystyle a(n)=a(1)+(n-1)d}, the explicit formula is designed to solve for an and give you the nth term of a sequence. However, you can algebraically manipulate this formula and solve for any of the variables.  For example, suppose you have the end of a list of numbers, but you need to know what the beginning of the sequence was. You can rearrange the formula to give you a(1)=(n−1)d−a(n).{\displaystyle a(1)=(n-1)d-a(n).}  If you know the starting point of an arithmetic sequence and its ending point, but you need to know how many terms are in the list, you can rearrange the explicit formula to solve for n. This would be n=a(n)−a(1)d+1{\displaystyle n={\frac {a(n)-a(1)}{d}}+1}. If you need to review the basic rules of algebra to create this result, check out Do Algebra or Simplify Algebraic Expressions. You may know that the 50th term of an arithmetic sequence is 300, and you know that the terms have been increasing by 7 (the “common difference”), but you want to find out what the first term of the sequence was. Use the revised explicit formula that solves for a1 to find your answer. Use the equation a(1)=(n−1)d−a(n){\displaystyle a(1)=(n-1)d-a(n)}, and fill in the information that you know. Since you know that the 50th term is 300, then n=50, n-1=49 and a(n)=300. You also are given that the common difference, d, is 7. Therefore, the formula becomes a(1)=(49)(7)−300{\displaystyle a(1)=(49)(7)-300}. This works out to 343−300=43{\displaystyle 343-300=43}. The sequence that you have began at 43, and counted up by 7. Therefore, it looks like 43,50,57,64,71,78…293,300. Suppose you know all about the start and end of an arithmetic sequence, but you need to find out how long it is. Use the revised formula n=a(n)−a(1)d+1{\displaystyle n={\frac {a(n)-a(1)}{d}}+1}.  Suppose you know that a given arithmetic sequence begins at 100 and increases by 13. You are also told that the final term is 2,856. To find the length of the sequence, use the terms a1=100, d=13, and a(n)=2856. Insert these terms into the formula to give n=2856−10013+1{\displaystyle n={\frac {2856-100}{13}}+1}. If you work this out, you get n=275613+1{\displaystyle n={\frac {2756}{13}}+1}, which equals 212+1, which is 213. There are 213 terms in that sequence. This sample sequence would look like 100, 113, 126, 139… 2843, 2856.