Exploring the Formula for the n-th Term in Arithmetic Sequences

What does 'a sub 1' represent in the formula for the nth term of an arithmetic sequence?

• Number of terms

• Common difference

• Last term of the sequence

• First term of the sequence

How is the common difference represented in the formula for the nth term?

• a sub n

• a sub 1

• n

• D

How many times is the common difference added to the first term to find the nth term in an arithmetic sequence?

• 2n

• n+1

• n-1

• n

In the sequence 3, 8, 13, 18, ..., what is the common difference?

• 3

• 5

• 15

• 10

Using the nth term formula, what is the 10th term of the sequence 3, 8, 13, 18, ...?

• 58

• 53

• 48

• 43

What is the 202nd term of the sequence 3, 8, 13, 18, ... using the nth term formula?

• 1013

• 1018

• 1008

• 1003

If the 8th term of a sequence is 25 and the 14th term is 43, what is the common difference?

• 5

• 4

• 3

• 2

Given the 8th term is 25 and the 14th term is 43, what is the first term of the sequence?

• 2

• 5

• 3

• 4

What method is used to solve the system of equations in the problem?

• Elimination

• Matrix method

• Substitution

• Graphing

What is the value of 'a sub 1' after solving the system of equations?

• 3

• 5

• 2

• 4