Sequences Rules

Determine the number of small triangle in the 7th term

• 49

• 25

• 34

• 5

Determine the 6th term of the following sequence...

• 17

• 21

• 25

• 29

Determine the 5^th term of the sequence given the rule 3n – 4.

• -4

• 3

• 11

• 15

Find the first four terms of the sequence given the rule:
a_n = 4(5)^n-1

• 20, 100, 500, 2500

• 5, 20, 80, 320

• 4, 20, 100, 500

• 4, 9, 14, 19

Given the sequence: 125, 25, 5, .... Write the rule a_n using the geometric sequence formula:

• a_n = (125)(1/5)^(n-1)

• a_n = 625(1/5)^(n-1)

• a_n = 625(5)^(n-1)

• a_n = 125 + 5n

Select the explicit rule that represents the sequence.

• -216

• -148

• -146

• -150

Find the 25th term of the sequence if a₁ = 5 and d = 0.5

• 18

• 17

• 15

• 14

If a₁=5 and a₂=11 in an arithmetic sequence, then what is a₁₅=?

• 95

• 89

• 81

• 159

Write the explicit formula for the sequence shown below. 3, -3, -9, -15

• a_n=3+6(n-1)

• a_n=3−6(n-1)

• a_n=6−3(n-1)

• a_n=6+3(n-1)