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1. Equations in Real Life Situations

   SWBAT write equations using real-life word problems.
2. Do Now The ratio of nitrogen to potassium in a sample of soil is 12:9. The sample has 36 units of nitrogen. How much potassium does the sample have? 21 b) 27 c) 33 d)48 2. Cody has $450 in his savings account. He adds $20 to his savings account each week. Which expression represents the amount of money Cody has in his savings account after x weeks? A) 450x + 20 B) 450 + 20x C) 470 + x D) 470x 3. The late fee at a DVD rental store costs $3.00 for each day a video is late. If n is the number of days a DVD is late, which expression could be used to represent the cost of a late DVD? A) n ÷ 3.00 b) 3.00 ÷ n c) 3.00 · n d) 3.00 + n 4. In chapel hill, there are 2 buses that go from an apartment complex to campus. One bus, the NS, comes every 15 minutes. The other bus, the t, comes every 10 minutes. In how many minutes will both buses come at the same time? a) 25 b) 30 c) 10 d) 60
3. Working Together Work with a partner on the following: George had a basket containing an even number of apples. He gives half to his brother and 3 to his mom.  How many apples did he have left? Why did we come up with so many answers? What could we do to get only one solution? If George ended up with 4 apples, how many did he start with?
4. Independent Practice You will have 10 minutes to work silently and independently. When time is up, you will turn and talk to a partner so you can help each other out.