Issue 7: In the Name of Pi, Math in Our Lives

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20 | ORIGINS 5. How long will it take to pay off those pesky student loans? Whether going on an epic road trip, heading to college, or buying a house, most people have to worry about the money it will cost. Sometimes, this leads to taking out loans in order to achieve that goal. Typically, we can put it off as a future worry, but we would all like to know when we no longer have to chop off part of our pay check in order to pay them off. Let’s imagine that while going to school, you had to take out some loans in order to carry you through the last two years of school. You got a $3000 unsubsidized loan and a $2500 subsidized loan. You want to try to get these both paid back within 5 years of graduating. But, in order to do that, you first gotta figure out how much to pay. Let’s set up a complex algebraic equation so that we can skip going to an accountant. The interest is 2.5% for both loans, but the unsubsidized loan accrued interest while you were still in school. That means the unsubsidized loan will have accumulated interest for 7 years, while the subsidized will have 5 years of interest added to it. The simplified equation you use to calculate your interest is: 3000*rt+2500*rt=X, where r=rate and t=time. Since the time is different for each loan, it works out to 3000*(.025*7)+2500*(.025*5.5)=X. Math it out and you find out that you end up owing an extra $837.50. Adding that to the original borrowed amount means you owe $6337.50. Next, divide that by 60 (12 months * 5 years) and you get $105.63. That’s how much you need to pay every month to have the loans paid off in 5 years. Despite some of our best efforts, math still manages to permeate our everyday lives. While most of the time we may be able to get away with pretending it doesn’t exist, there are lots of instances where doing just a little bit of math will save us a lot of hassle in the long run. So don’t be afraid to bust out a calculator every now and then. (Besides, it comes on your smartphone. Use it like all your other favorite apps!) And, as always, remember to show your work. t www.knowyourorigins.org
2+2 = FISH | 21 RINGO.COCO | CC BY-NC-SA 2.0 2+2 = Fish Alex Vosburgh So in my travels down the avenues of the vast crevices of the brain, I stumbled upon a seemingly magical theorem that I would like to pose to you all. Because if you put your mind to it, anything is possible! 1 pie = full circle = 2 pi in radians 1 pie = 2 pi Divide by pi and you get e = 2 2 = 2-ish To make this a bit more readable let’s divide by 2 and multiply by, let’s say f, and you get f = f-ish or fish (because I like fish) Now it is known that 4 = four But ‘our’ is a singular possessive pronoun, so it can be written that our = 1 Hence, 4 = f*1 = f Substituting, 4 = fish And since 2+2 = 4 it can be written that 2+2 = fish And that is why we show our work; because if you have a good reason, you will be amazed at what you can get away with. Now follow your dreams. Origins Scientific Research Society
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Issue 7: In the Name of Pi, Math in Our Lives

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