For the series 16, 24, 36, 54... find s7
1 answer:
Answer:
C.) 514.75
Step-by-step explanation:
r = 24/16 = 1.5
r = 36/24 = 1.5
r = 54/36 = 1.5
16 + 24 + 36 + 54 + 81 + 121.5 + 182.25 = 514.75
or use:
Sn = a[ (1-r^n) / (1 - r) ]
S7 = 16[ (1 - 1.5^7) / (1 - 1.5) ]
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