Finding the Nth Term of an Arithmetic Sequence Explicit

Find the 20th term of the arithmetic sequence 5, 9, 13, 17, 21,...

• 80

• 81

• 82

• 87

In the sequence 50, 45, 40, 35, ..., which term is 5?

• 5th term

• 6th term

• 9th term

• 10th term

The 10th term of an arithmetic sequence is 22 with a common difference of -2. Find a₁.

• 34

• 36

• 40

• 42

The 5th term of an arithmetic sequence is 21 and the 11th term is 51. Find the common difference.

• -10

• -5

• 5

• 10

Which term of the arithmetic sequence 2, 7, 12, 17,... is 122?

• 23rd term

• 24th term

• 25th term

• 26th term

The 1st term of an arithmetic sequence is 2 while the 18th term is 87. Find the common difference.

• 2

• 5

• 7

• 9

How many terms are in an arithmetic sequence whose first term is -3, common difference is 2, and last term is 23?

• 12

• 13

• 14

• 15

An arithmetic sequence is given below.

2, 9, 16, 23, ...

Which is the explicit formula for the n^th term a_n?

• a_n = -7n+9

• a_n = 7n-5

• a_n = 7n-9

• a_n = -7n+5

An arithmetic sequence is given below.

16, 13, 10, 7, ...

Which is the explicit formula for the n^th term a_n?

• a_n = -3n+19

• a_n = -5n+13

• a_n = 3n+13

• a_n = -5n+20