HA2 2021 S1 T1 4-5

Which recursive formula best describes the following sequence:
3, 8, 13, 18, 23...

• a_n = (3)^n-1 ; a₁ =5
• a_n = (5)^n-1 ; a₁ =3
• a_n = a_n-1+3 ; a₁ =5
• a_n = a_n-1+5 ; a₁ =3

Tags

CCSS.HSF.IF.A.3

Which sequence best follows the formula
a_n= a_n-1 + 9;  a₁= -99

• -99, -108, -117, -126...
• -99, -90, -81, - 72...
• 9, -90, - 189, -288
• 9,-90, 189, -288

Tags

CCSS.HSF.BF.A.2

25th term: a₁ = 5; d = 0.5

• 18
• 17
• 15
• 14

Tags

CCSS.HSF.BF.A.2

Find the 22nd term. 3, 7.5, 12, 16.5

• 96.5
• 95.5
• 93.5
• 97.5

Tags

CCSS.HSF.BF.A.2

Given a_n = 13 - 4n find the 10th term.

• 27
• -397
• -27
• cannot be determined

Tags

CCSS.HSF.BF.A.2

Given a_n = 5(a_n-1) + 5 and

a₁₂= 24, find a_13.

• 13

• 65

• 70

• 125

Tags

CCSS.HSF.IF.A.3

• A.
• B.
• C.
• D.

Tags

CCSS.HSF.BF.A.2

• A.
• B.
• C.
• D.

Tags

CCSS.HSF.BF.A.2

• 360
• 128
• 348
• 124

Tags

CCSS.HSF.BF.A.2

Create the explicit formula for the sequence:
2, 8, 14, ...
(Hint:  Write your formula and then simplify it.)

• a_n=2+6n
• a_n=-6+6n
• a_n=6n-4
• a_n=4-6n

Tags

CCSS.HSF.BF.A.2