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161 Practice Test
By Marjorie Brewer
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Chapter 10 PRACTICE TEST
Please do the problems, then submit. You may go back in to check (and change) your answers.
Explicit formulas are on the whiteboard.
Remember for recursive to reference the previous number, a_{n-1}
If you didn't finish your homework (DeltaMath) yet, please finish it tonight.
Question 1
1.
The first three terms of a sequence are given. Write an explicit formula for the terms.
10, 14, 18, ...
Question 2
2.
Find the 49th term of
[1]
, round to the nearest thousandth if necessary
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Question 3
3.
The first three terms of a sequence are given. Write an explicit formula for the terms.
16, 48, 144, ...
Question 4
4.
Find the sixth term of
[3]
Round to the nearest thousandth if necessary
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Question 5
5.
If a_1=6 and a_n=a_{n-1}+3 find the value of a_4
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Question 6
6.
If a_1=3 and a_n=(a_{n-1})^2-5 find the value of a_4
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Question 7
7.
If a_1=9 and a_n=na_{n-1}+4 find the value of a_3
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Question 8
8.
If a_n=2 and a_{n+1}=(a_n)^2-2 find the value of a_3
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9
10
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Question 9
9.
1
Question 10
10.
11
12
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Question 11
11.
1
Question 12
12.
13
14
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Question 13
13.
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1
Question 14
14.
Question 15
15.
Write an explicit formula that represents the sequence defined by the following recrusive formula:
a_1=5 and a_n=a_{n-1}+3
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After you have submitted, and checked your answers, work on DeltaMath.