Problem: Write an article based on this summary: Learn the formula. Plug your data into the formula. Divide the population by the area size.

Answer: To calculate the population density, you will divide the population by the size of the area. Thus, Population Density = Number of People/Land Area.  The unit of land area should be square miles or square kilometers. You can use square feet or meters if you are finding the density of a smallish space. For most professional and academic demographic purposes, though, you'll need to use the standard square miles or kilometers. The unit of population density is people per unit of area. For instance, 2000 people per square mile. You should know the population and the surface area of the region. For example: if there are 145,000 people in the city of Auburn, and the urban area covers 9 square miles, write 145,000/9 square miles. Use long division, or just use a calculator. In our example, 145,000 divided by 9 would show that the population density is 16,111 people/square mile.


Problem: Write an article based on this summary: Use pre-shave lotion specifically designed for electric shaves. Shave the desired areas until smooth. Clean your electric razor after you use it.

Answer: Since electric shavers work by shearing the whiskers instead of shaving them, you want your hair to be upright and brittle. "Lectric Shave" or other, alcohol-based pre-shave lotions remove excess oil and help the hairs on your face stand up, making for an easier dry-shave. Because the electric shaver shears instead of shaves, it can take multiple passes to capture the hair in the small perforations on the shaver head. Be patient as you go over the desired areas, and remember not to press down too hard. Your electric razor will have hair and dead skin will be caught in the device. Lift the head and dump the refuse into a trash bin. Optionally, put a small amount of metal lubricant on the head of the shaver after it's cleaned out. This will make the head of the shaver run smoothly over the surface of your skin.


Problem: Write an article based on this summary: Understand the concept of multiplication and division. Learn the properties of multiplication. Practice your multiplication and division tables.

Answer: The idea behind multiplication is to shortcut adding the same things over and over again. You use multiplication when you have groups of the same size. For example, maybe you have three cups of water that you drank ten times. How many cups of water did you drink total? You could solve this problem by counting adding the amount of times you drank the water from each cup together, or you could clump them into groups to multiply.   The idea behind division is splitting equal parts into groups. If you have a pizza with eight slices and four friends, how should you split it up so that each person gets an equal amount of the pizza? In division, that problem would be written as eight divided by four. Each person gets two pieces of pizza. For example, order doesn’t matter when you multiply. That’s one of the properties that you should learn if you want to learn multiplication.  You also should learn multiplication problems that change the order of factors, which is called commutativity, problems that change the grouping of factors, which is called associativity. Becoming familiars of the rules to each number will be a huge help when dividing and multiplying. For example, when you multiple numbers by five the answer will always end in a five or a zero. If you multiply a number by two, it will always end in an even number. Similar rules apply for division. Learn these rules and practice your tables.


Problem: Write an article based on this summary: Make a halo. Attach the halo. Insert an eye pin if you'd like to turn the angel into an ornament or charm. Bake the angel the rest of the way, about 15 minutes. Add a face. Glaze the angel, if desired. Use the angel as a charm or ornament.

Answer:
Roll some yellow, pale yellow, or gold clay into a thin coil. Wrap the coil into a ring. For a fancier touch, use a soft, fluffy brush to dust gold eyeshadow onto the clay. Simply place the halo on top of the angel's head. For a stronger hold, coat the inside rim of the halo with liquid clay first. Measure the eye pin against the angel first. The eye part of the pin should rest right against the top of the angel's head. If the pin is too long, cut it down with a pair of wire cutters. Once the pin is the right length, push it right through the top of the angel. Follow the baking instructions on your package of clay, but only bake it for half the recommended time. This will bake the head, body, and arms the rest of the way. The hair, wings, and halo will also get baked all the way as they are thinner. Use a permanent pen to add to small dots for the eyes. Add two thin curves above each eye for the eyebrows. Draw a small curved line or a dot for the mouth. If you carved a mouth, you don't have to draw it.  Alternatively, you can paint on the face instead using acrylic paint and a thin paintbrush. Add some blush with a q-tip, if desired. You can use colored powder, actual blush, or pink water color. Keep the blush light and pale. Choose a glaze meant for polymer clay, then apply it using a paintbrush. You can also add some iridescent glitter glue along the wings and base to make it more sparkly. If you want to use the angel as a charm: twist open a jump ring with a pair of needle nose pliers. Slip the jump ring through the eye pin, then twist it close. If you want to use the angel as an ornament: thread some string through the eye pin. Tie the ends of the string together into a loop. You can also use the angel as a figurine. Stand it on your desk, shelf, or wherever you'd like.