Test bank for college algebra with intermediate algebra
blended course 1st edition beecher full chapter
,
,CHAPTER 12 NAME
TEST FORM A CLASS SCORE GRADE
ANSWERS
n+1 1 ⎞2
1. For the sequence whose nth term is an = ( 1) |⎩ 2 n|⎠ , find 1.
a8 .
2.
2. Find the first 5 terms of the sequence with general term
an 1 n 1 3n 4 .
3.
4
3. Find and evaluate: 5(k
k =1
2
+ k) .
4.
Write sigma notation. Answers may vary.
4. 8 + 16 + 24 + 32 + 40 5.
1 1 1 1 1
5.
2 4 8 16 32
6.
6. Find the first 4 terms of the recursively defined sequence
a1 2, an 1 3an 5 .
7.
7. Find the 20th term of the arithmetic sequence 32, 28, 24, .
8.
8. The 1st term of an arithmetic sequence is 5 and the 12th term
1
is . Find the 10th term.
2
9.
9. Find the sum of the first 20 terms of the series 2 12 22 .
24
10.
10. Find the sum: 2k 1 .
k 1
, 11. Find the 7th term of the geometric sequence 3, 15, 75, 375, . 11.
Copyright ©2017 Pearson Education, Inc. 261
blended course 1st edition beecher full chapter
,
,CHAPTER 12 NAME
TEST FORM A CLASS SCORE GRADE
ANSWERS
n+1 1 ⎞2
1. For the sequence whose nth term is an = ( 1) |⎩ 2 n|⎠ , find 1.
a8 .
2.
2. Find the first 5 terms of the sequence with general term
an 1 n 1 3n 4 .
3.
4
3. Find and evaluate: 5(k
k =1
2
+ k) .
4.
Write sigma notation. Answers may vary.
4. 8 + 16 + 24 + 32 + 40 5.
1 1 1 1 1
5.
2 4 8 16 32
6.
6. Find the first 4 terms of the recursively defined sequence
a1 2, an 1 3an 5 .
7.
7. Find the 20th term of the arithmetic sequence 32, 28, 24, .
8.
8. The 1st term of an arithmetic sequence is 5 and the 12th term
1
is . Find the 10th term.
2
9.
9. Find the sum of the first 20 terms of the series 2 12 22 .
24
10.
10. Find the sum: 2k 1 .
k 1
, 11. Find the 7th term of the geometric sequence 3, 15, 75, 375, . 11.
Copyright ©2017 Pearson Education, Inc. 261
