Question

Please help...Find the sum of the first six terms of the series: -96,144,-216,324,...

Answer 1

The rule is \( a_{n+1} = -1.5 a_n \)
with \( a_0=-96 , and r=-1.5 \)
The partial sum is \( a_0\frac{1-r^n}{1-r}=(-96)\frac{1-(-1.5)^6}{1-(-1.5)} \)

Answer 2

oohh okay thank you

Answer 3

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Answer 4

yw!