Answer:
144
Step-by-step explanation:
If the first term is 0, the second is 4, the third 16, and so on. The appropriate formula for this is a(n) = 4*(n-1). The ninth term is a(9) = 4*(8) = 32
This partial series looks like {0, 4, 8, 12, 16, 20, 24, 28, 32 }
The sum of these nine terms is equal to 9 times {the sum of the 1st and last terms}, divided by 2, or 9(0+32)/2, or 9(16), or 144.
