Sequences and Series

What are the next 3 terms in the sequence 4, 8, 12, ___, ___, ___

• 14, 16, 18

• 16, 20, 24

• 16, 18, 20

• 24, 48, 96

Find the a and d value for the arithmetic sequence...

109, 97, 85, . . .

• a = 12 , d = 12

• a = 109 , d = 12

• a = 109 , d = -12

• a = -12, d = 109

Which of the following are Arithmetic Sequences?

(check all the appropriate answers then submit)

• 5, 12, 19, 26, . . .

• 8, 24, 72, 216, . . . 

•  $\frac{3}{4},\ \frac{7}{8},\ 1,\ \frac{9}{8},\ \ \ .\ .\ .\$  

• 1, 1, 2, 3, 5, 8, . . .

• 5, -1, -7, . . . 

Find the 12th term in the

arithmetic sequence

9, 16, 23, . . .

Determine the number of terms in the sequence 1, 3, 5, . . . , 123

(enter the number of terms only)

For the geometric sequence
3, 12, 48, 192, . . .


What is  $t_{10}$  ? 

• 786 432

• 3145728

• 39

• 262147

Determine the a and r value for a geometric sequence where: $t_3=45$   and  $\ t_7=3645$  

• a = 45 , r = 7

• a = 5 , r = 3

• a = 5 , r = 81

• a = 3645, r = 45

How many terms are in the geometric sequence

2, 6, 18, . . . , 1458

• n = 5

• n = 6

• n = 7

• n = 486

Classify this sequence as ARITHMETIC, GEOMETRIC or NEITHER.

-2, 6, -18, 54, . . .

• ARITHMETIC

• GEOMETRIC

• NEITHER

Determine the sum of the first 10 terms in the arithmetic series:

5 + 8 + 11 + . . .

• 32

• 185

• 98415

• 205