+0  
 
0
155
1
avatar

n

4

37

an

45

606

Hint: an = a1 + d(n − 1), where a1 is the first term and d is the common difference.

 

Part A: What is the first term, a1, of the sequence?

 

Part B: What is the general term equation, an, for this sequence?

 

Part C: What is the value of the 13th term of this sequence?

Guest Feb 27, 2018
 #1
avatar+90023 
0

a4  = 37

a45 = 606

 

We have  45 - 4  = 41 terms between these

 

So.....d  =

 

[606 - 37 ] / 41   = 569 / 41

 

The first term is

 

37 - 3(569/41)  =   -190/41

 

The general equation  is

 

an  =   -190/41   + (569/41(n - 1)

 

The 13th term is

 

a13  =  6638 / 41

 

 

 

cool cool cool

CPhill  Feb 27, 2018

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