Find the 15th term of the arithmetic sequence.

2, 3.5, 5, 6.5, ...

An=a1+d (n-1)

a1=first term

d=common difference

n=which term

adds 1.5 each time

first term is 2

we want to find 15h term

a15=2+1.5 (15-1)

a15=2+1.5 (14)

a15=2+21

a15=23

the 15th term is 23