FINDING THE SPECIFIC TERM FROM THE GIVEN EXPLICIT FORMULA WORKSHEET

Given the explicit formula for an arithmetic sequence find the first five terms and the term named in the problem.

Problem 1 :

a_n = -11 + 7n

Find a₃₄

Solution

Problem 2 :

a_n = 65 - 100n

Find a₃₉

Solution

Problem 3 :

a_n = -7.1 - 2.1n

Find a₂₇

Solution

Problem 4 :

Solution

Find the common difference, the explicit formula, and the term named in the problem.

Problem 5 :

31, -69, -169, -269, ...

Find a₄₀

Solution

Problem 6 :

-22, -222, -422, -622

Find a₃₂

Solution

Problem 7 :

12, 16, 20, 24,...

Find a₃₀

Solution

Problem 8 :

0, -4, -8, -12,..

Find a₃₁

Solution

Problem 9 :

-10, -30, -50, -70, ...

Find a₂₁

Solution

Problem 10 :

11, 20, 29, 38,...

Find a₃₄

Solution