Posted by **Tifini** on Thursday, April 4, 2013 at 6:53pm.

The simple formula for the nth term of an arithmetic sequence is an = 4n + 16. What is the explicit formula corresponding to the simple formula?

- Algebra 2 -
**Bosnian**, Thursday, April 4, 2013 at 8:10pm
1 th term

a1 = 4 * 1 + 16 = 4 + 16 = 20

2 th term

a2 = 4 * 2 + 16 = 8 + 16 = 24

3 th term

a3 = 4 * 3 + 16 = 12 + 16 = 28

4 th term

a4 = 4 * 4 + 16 = 16 + 16 = 32

etc.

Arithmetic sequence with first term

a1 = 20

and common difference d = 4

General formula for arithmetic sequence :

an = a1 + ( n - 1 ) * d

In this case :

an = 20 + ( n - 1 ) * 4

- Algebra 2 -
**Ebony**, Thursday, April 2, 2015 at 6:25pm
Write the explicit formula for the geometric sequence.

a1 = -5 a2 = 20 a3 = -80

## Answer This Question

## Related Questions

- Algebra - The simple formula for the nth term of an arithmetic sequence is an = ...
- math - The simple formula for the nth term of an arithmetic sequence is an = 6n...
- math - 1. Use the given arithmetic sequence to answer the following problems. ...
- Math - Write a formula for the general term (the nth term) of the arithmetic ...
- algebra - Could someone check my work; 1. Generate the first five terms in the ...
- Math - 1.) What is the formula for the nth term of the arithmetic sequence that ...
- PreCal - Write a formula for the general term(the nth term)of the arithmetic ...
- Sequence - Find the common difference and a formula formula for the nth term of ...
- Algebra - Is this sequence 10, 15, 20, 25, 30 an arithmetic or geometric ...
- Math ( Can You check my Work?) - 1.an = 3n - 1 2. an = 2(2n - 3) 3.an = 4^n 4.an...

More Related Questions