Question

b) Find the 7th term in the series 15, 11, 7, 3, ....​

Answer 1

Answer:

answer is -9

Explanation:

a=15

d= -4

n=7

thus,

tn = a+ (n-1)d

= 15+ ( 7-1)(-4)

= 15+ 6*(-4)

= 15 - 24

= -9

Thus the answer.