What if the jelly bean machine gives 3 jelly beans to the first customer who put in a coin, 4 to the second, 8 to the third, 15 to the fourth, 25 to the fifth, etc.    How many jelly beans will the machine give out if the machine will receive its 35th coin?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section: Chapter Questions
Problem 40CT: There are 10 applicants for three sales positions at a department store. All of the applicants are...
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What if the jelly bean machine gives 3 jelly beans to the first customer who put in a coin, 4 to the second, 8 to the third, 15 to the fourth, 25 to the fifth, etc. 
 
How many jelly beans will the machine give out if the machine will receive its 35th coin?

and how about its 12th coin? 

How many has the machine given out after 12 coins are put into the machine? 

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