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pychu [463]
3 years ago
15

One month, Ava purchased a set of 35 stamps. Each month, starting the second month, she purchased 3 more stamps for her collecti

on. What is the explicit rule for the number of stamps in Ava's collection after n months? Enter your answer in the box. an=
Mathematics
2 answers:
lara31 [8.8K]3 years ago
7 0
35 + 3n= x 
x being the total amount of stamps!

is there a substitution for n? or a number of months? 
AVprozaik [17]3 years ago
5 0

Answer:

a_n = 3n + 32

Step-by-step explanation:

Ava purchased a set of 35 stamps. Each month, starting the second month, she purchased 3 more stamps for her collection.

So first month she has 35 stamps, second months she has 38 stamps and so on...

35, 38, 41, 44........

This is arithmetic sequence , so we use formula

a_n = a_1+(n-1)d

Where a1 is the first term and d is the difference

a1= 35, d= 3

so formula becomes

a_n = 35+(n-1)3

a_n = 35+3n - 3

a_n = 3n + 32


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