We use the following equation:an=a1 * rn-1

an: last terma1: first termr: common ratio n: positionGeometric sequences and the real world: Finance

So let’s say you put in 100€ in your Mercantil account when you are 15. It gains a 2.5% interest monthly.

How much money will you have in 10 years?

If you are 85 how much money would you have?

100x(1+2.5/100)1100x(1.025)1Total per month=102.5100x(120+2.5/100)1100x(120.025)1Total after 10 years= 1200.25

100x(840+2.5/100)1100x(840.025)1Total Money when you are

85=84002.5

A new company of books had open, they currently have 2 workers and together they produce 3 books, when the company had 1 worker they produced 1 book per day. When they got a 3 worker they produced 5 books per day.How many books will 40 workers make on a month?

Un=1+(40-1)2 Un=1+39x2 Un=79 79 books per day times 30 days 79x30 = 2370 books on a month.

Geometric Sequences:Whiffen, Glen, Marjut Mäenpää, James Foley, Michael Haese, and Sandra Haese. "Sequences and Series." Mathematics for the International Student : Mathematical Studies SL Second Edition. By Mal Coad. 2nd ed. South Australia: Haese & Harris Publications, 2010. 445,475-78. Print. Arithmetic Sequences:Hanan, Mary. "Meet the Boy Too Big for His Mom's SUV - ABC News." ABCNews.com - Breaking News, Latest News & Top Video News - ABC News. Web. 17 Jan. 2012. <http://abcnews.go.com/Health/MedicalMysteries/story?id=5466774>."Tallest Teenager Living (male) - Size - Explore Records - Guinness World Records."Guinness World Records - Home of the Longest, Shortest, Fastest, Tallest Facts and Feats. Guinness World Records. Web. 17 Jan. 2012. <http://www.guinnessworldrecords.com/tallest-teenager-living-(male)/>.