Question #62d78

1 Answer
Feb 7, 2017

The equation of arithmetic sequence is below:

A_n = (n-1)*d + A_1

by using a_9 = -121:
a_9=-121 = (9-1)d -33
d = -22

So we can write the equation of this sequence because we now have d

A_n = -11(n-1) -33

Now solve for a_32

a_32 = -11(32-1)-33
a_32 = -374