SOLUTION: Which is the iterative rule for the sequence: 15.5, 13, 10.5, 8, 5.5, 3, …? (Points : 1) a. an = 15.5 − 2.5n b. an = 18 – 2.5n c. an = 15.5 + 2.5n

Algebra ->  Sequences-and-series -> SOLUTION: Which is the iterative rule for the sequence: 15.5, 13, 10.5, 8, 5.5, 3, …? (Points : 1) a. an = 15.5 − 2.5n b. an = 18 – 2.5n c. an = 15.5 + 2.5n       Log On


   

Question 925651: Which is the iterative rule for the sequence: 15.5, 13, 10.5, 8, 5.5, 3, …?
(Points : 1)
a. an = 15.5 − 2.5n
b. an = 18 – 2.5n
c. an = 15.5 + 2.5n
d. an = 18 + 2.5n
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Which is the iterative rule for the sequence: 15.5, 13, 10.5, 8, 5.5, 3, …?
(Points : 1)
a. an = 15.5 − 2.5n
b. an = 18 – 2.5n
c. an = 15.5 + 2.5n
d. an = 18 + 2.5n
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You know the 1st term has n = 1
Looking at the 1st term (15.5) you can see that "a" would be less than
15.5 for n = 1. So "a" is not the answer.
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"c" cannot be the answer because when n = 1, 15.5+2.5n is greater than 15.5.
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"d" is greater than 18 for n = 1 so "d" is not the answer.
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Ans: The answer is "b"
Check it out.
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Cheers,
Stan H.
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