Question

The first three terms of an arithmetic sequence are given. Find an expression for tn in terms of n, and write the tenth term for each sequence. PLEASE HELP ASAP!!

a, 2a, 3a, . . .

tn = ?
t10 = ?

THANK YOU!!!!!!!!!!!!!!!!

Answer 1

Answer:

  tn = n·a

  t10 = 10a

Step-by-step explanation:

We observe that the coefficient of 'a' is the term number:

  tn = n·a

  t10 = 10a

Answer 2

Answer:

tn = n·a

 t10 = 10a

Step-by-step explanation:

We observe that the coefficient of 'a' is the term number:

 tn = n·a

 t10 = 10a