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Fredo10
27.08.2019 •
Mathematics
The graph shows samuel’s weight from birth until he was 10 years old.
based on the graph, about how many pounds did samuel weigh when he was 7 years old?
a.
46 lb
b.
52 lb
c.
58 lb
d.
61 lb
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Ответ:
Ответ:
Ответ:
750 × summation[ 1.1 ^ (n - 1)]
n = 1 till n = 60
Alternately,
7500(1.1⁶⁰ - 1)
Step-by-step explanation:
5 years = 60 months
Every month: 750×1.1^(n-1)
750 + 750(1.1) + 750(1.1)² +... + 750(1.1)⁵⁹
Summation [750 × 1.1^(n-1)]
n goes from 1 till 60
750 × summation[ 1.1 ^ (n - 1)]
n = 1 till n = 60
Alternately,
750(1.1⁶⁰ - 1)/(1.1 - 1)
750(1.1⁶⁰ - 1)/(0.1)
7500(1.1⁶⁰ - 1)