SOLUTION: Four algebra 2 questions for practice before a test?? 1. What are the first four terms of the sequence given by the formula below? a_n=-2n+4 2. What is the 8th term of the seq

Question 1000166: Four algebra 2 questions for practice before a test??
1. What are the first four terms of the sequence given by the formula below?
a_n=-2n+4
2. What is the 8th term of the sequence given by a_n=3n-5?
3.Write a recursive definition for the sequence below:
-1, 4, 9, 14
4. Write an explicit definition for the sequence 2, 8, 14, 20, 26.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
1. What are the first four terms of the sequence given by the formula below?
a_n=-2n+4
1st: -2+4 = 2
2nd: -4+4 = 0
3rd: -6+4 = -2
4th: -8+4 = -4
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2. What is the 8th term of the sequence given by a_n=3n-5?
a(8) = 3*8-5 = 19
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3.Write a recursive definition for the sequence below:
-1, 4, 9, 14
Note: a(1) = -1, common difference = 5
a(n) = -1 + 5(n-1) = 5n-6
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4. Write an explicit definition for the sequence 2, 8, 14, 20, 26.
Note: a(1) = 2 ; common difference = 6
a(n) = 2 + 6(n-1) = 6n-4
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Cheers,
Stan H.
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