Which of the following is an arithmetic sequence?

​

Below.

Step-by-step explanation:

This is an arithmetic sequence since there is a common difference between each term. In this case, adding  

4

to the previous term in the sequence gives the next term. In other words,  

a

n

=

a

1

+

d

(

n

−

1

)

.

Arithmetic Sequence:  

d

=

4

This is the formula of an arithmetic sequence.

a

n

=

a

1

+

d

(

n

−

1

)

Substitute in the values of  

a

1

=

3

and  

d

=

4

.

a

n

=

3

+

(

4

)

(

n

−

1

)

Simplify each term.

Tap for more steps...

a

n

=

3

+

4

n

−

4

Subtract  

4

from  

3

.

a

n

=

4

n

−

1

can you rephrase the question ? it is unclear : -)

step-by-step explanation:

it’s the first one your welcome