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alexgriva [62]
2 years ago
10

Abel and Zöe’s grandparents opened a savings account for an equal amount upon the birth of each child. Now, the values of their

accounts could be found by the following expressions, where t represents the years since 2011. Abel: y = 1266. 77(1. 03)t Zöe: y = 1159. 27(1. 03)t Based upon this information, find the difference in the children’s ages. Abel is years older than Zöe. Suggestions: Find the ratio 1266. 77/1159. 26. What does that ratio represent in terms of powers of 1. 03? You also can graph both equations and figure out the shift.
Mathematics
1 answer:
lina2011 [118]2 years ago
4 0

Answer:

Abel is 3 years older than Zoe.

Step-by-step explanation:

Abel: y = 1266.77(1.03)^t

Zöe: y = 1159.27(1.03)^t

To find the difference in children's ages first we take ratio of 1266.77/1159.26

Ratio of 1266.77/1159.26= 1.09

now when you write ratio in terms of powers of 1.03

1.03^t = 1.09

Take ln on both sides

t ln(1.03) = ln(1.09)

Then you divide both sides by ln(1.03)

t= 3

Abel is 3 years older than Zöe.

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