im not sure how to find the first four terms of each arithmetic sequence

Question

tn=4+(n-1)(3)

helpp me pleasee!

Answer 1

let n= 1,2,3, and 4 in the expression to get
t1 = 4 + (1-1)(3) = 4
t2 = 4 + (2-1)(3) = 7
etc.

Answer 2

thank you so much.
you don't know how much that helped!