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cricket20 [7]
1 year ago
13

five years ago, sarah's aunt was 4 times older than sarah. if sarah's aunt is 42 years older then sarah, then sarah, how ols is

sarah?
Mathematics
1 answer:
Nimfa-mama [501]1 year ago
4 0

Answer:

Therefore, Sara’s current age (5 years later) is 19 years old.

Step-by-step explanation:

Let xx be Sara’s age five years ago. Therefore, Sara’s aunt’s age 5 years ago is 4x4x.

The difference in their ages is a constant, no matter how many years have gone by. (Can you see why?)

4x−x=42

3x=42

x=42/3

x=14

14+5=19

Therefore, Sara’s current age (5 years later) is 19 years old.

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kirill [66]

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OPTION D

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Here, $ x $ is the domain and $ f(x) $ is the co-doamin.

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It is rejected as well.

Now, for OPTION C: $ f(x) = \frac{x}{2} - 5 $

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3 years ago
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