geo nth term

Write the nth term rule for the geometric sequence.

• _Un = 7(1)ⁿ

• _Un = 7(-1)ⁿ

• _Un = 7(-1)^n-1

• _Un = -1(7)^n-1

Write the nth term rule for the geometric sequence.

• U_n = 10(2)^n-1

• U_n = 2(10)^n-1

• U_n = 10(2)ⁿ

• U_n = 2(10)ⁿ

What is the nth term rule for the sequence:

11, 22, 44, 88...

• U_n = 2(11)^n-1

• U_n = 11x2

• U_n = 11(2)^n-1

Find an explicit rule for the nth term of the sequence.

• a_n= -2(4)^n-1

• a_n= -2(4)ⁿ

• a_n= 2(-4)^n-1

• a_n= 2(4)^n-1

Tags

CCSS.HSF.BF.A.2

Find the explicit rule for the nth term of the sequence. The second and fifth terms of a geometric sequence are -24 and 1536, respectively.

• a_n= 6(-4)^n-1

• a_n= 6×-4^n-1

• a_n= 6(-4)ⁿ

• a_n= -6(4)^n-1

Tags

CCSS.HSF.BF.A.2

A geometric sequence has as its first three terms 48, 12, and 3. Which function represents the sequence?

• a_n = 48(1/4)^n-1

• a_n = 48 - (n-1)36

• a_n = 48(4)^n-1

• a_n = 3(4)^n-1

Tags

CCSS.HSF.BF.A.2

A geometric sequence has a₁ = 3 and r = 2. What is the Explicit Rule for a_n and use it to find the 10th term.

• a_n = 3 + 2(n-1)

  a₁₀ = 21

• a_n = 2(3)^n-1

  a₁₀ = 39366

• a_n = 3(2)^n-1

  a₁₀ = 1536

• a_n = 2 + 3(n-1)

  a₁₀ = 29

Tags

CCSS.HSF.BF.A.2

In a geometric sequence, a₄ = 18, a₅ = 6, and a₆ = 2. What is the explicit formula for this sequence?

• a_n = 2(3)^n-1

• a_n = 18(3)^n-1

• a_n = 18(1/3)^n-1

• a_n = 486(1/3)^n-1

Tags

CCSS.HSF.BF.A.2