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skip 21.b

 Feb 25, 2021
 #1
avatar+34376 
+1

3.2  + 4d = 4

4d = .8

d = .2

Firt term is thus   3.2 - .2 = 3

a= 3 + .2(n-1)

     = 2.8 + .2n   

 

I think you can find the first 7 terms gieven the formula....

 

a100 = 2.8  + 20 =   22.8

 Feb 25, 2021

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