Lets get started :)
To find the nth term of an arithmetic sequence, we use the formula given in the picture I have attached.
The common difference between these numbers is -4;
32 - 36 = -4 , 28 - 32 = -4 , 24 - 28 = -4
Finding the 29th term:
a₂₉ = 36 + ( 29 - 1 )( -4 )
= 36 + (28)(-4)
= 36 - 112
= - 76