# algebra

posted by Jennifer

can you check my answers please?
What are the first three terms of the sequence: a1 = 3 and an = 2(an1)2?

2, 8, 18

3, 18, 648

--3, 32, 50

2, 6, 12, 24
What is the 14th term in the sequence: an = 4n + 13?

-43

43

__> -69

69
What is the recursive rule for the sequence: −2.7, −8.3, −13.9, −19.5, −25.1 …?
(Points : 4)
an = an 1 + 5.6

an = an + 1 - 5.6

an = an + 1 + 5.6

--> an = an 1 - 5.6

Which describes the type of sequence in 99, 88, 66, 55, …?

both arithmetic and geometric

geometric

arithmetic

---> neither arithmetic nor geometric

1. Ron

Hello Jennifer, First off are you in K12 as well? If so I too am working on this. haha. I think #1 is correct but #2 is correct for sure if your 4n is a negative otherwise it would be just 69 not -69. the others, I am not sure of at the moment

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