The first 5 terms of a sequence are shown below: 3, -2, -7, -12, -17
Which expression can be used to find the nth term?

Step-by-step explanation:

To find the formula for the nth term ,

First , find the common difference or common ratio.

Common difference =

Common ratio =

The common difference applies to the other given numbers for example :

this proves that it is an arithmetic sequence and the given formula for the nth term of an arithmetic sequence is

T_n =a(n-1)d

Where n = no of terms

a= first term

d= common difference

question 1: step-by-step explanation:

1/4 of 84 = 84÷4= 21

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