Arithmetic Sequences and Explicit Formula

What is the common difference for the following arithmetic sequence?

What is a₁ for the following arithmetic sequence?

12, 4, -4, 12, ...

What is a₃₂ for the following arithmetic sequence?

12, 4, -4, 12, ...

What is the explicit formula for the nth term of the given sequence?

• A(n) = 9 + 7(n - 1)

• A(n) = 7 + 9(n - 1)

What is the explicit formula for the nth term of the given sequence?

• A(n) = 5 + 4(n - 1)

• A(n) = 5 + -4(n - 1)

A number sequence formed by adding a fixed number to

each previous term to find the next term. The fixed number is called the common difference

• Geometric Sequence

• Sequence

• Arithmetic Sequence

• Term of a Sequence

Is this an arithmetic or geometric sequence?

3, 7, 11, 15, ...

• Arithmetic

• Geometric

• Neither

Is this an arithmetic sequence? If so, what is the common difference?

• yes, d = -6

• yes, r = 6

• yes, d = 6

• no

What is the explicit formula for the nth term?

• A(n) = -2.5 + 9(n - 1)

• A(n) = 9 + -2.5(n - 1)

What is the explicit formula for the nth term?

• A(n) = 5 + 7(n - 1)

• A(n) = 7 + 5(n - 1)