Question

Aye help me plz :)

Given the following sequence, find the 15th term: 3, 1, –1, –3, –5, . . .

A. –28
B. –25
C. –33
D. –21

Answer 1

its a arithmetic progression with d = 1-3 = -1-1= -2
hence a15 = a1 + 14d
hence a15 = 3 + 14(-2) = -25
here a1 represent first term , d represent common difference

Answer 2

I hope this helps you