Question #62d78

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Answer 1 · 2017-02-07T17:09:40

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#