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algol13
4 years ago
12

A new model of a cell phone was released while the original model was still being sold. The average number of the original model

sold each week was
2750, which decreased by 21% each week after the new model was released. Which function can be used to determine the average number of original
model cell phones sold each week x weeks after the new model was released?
Mathematics
1 answer:
Rufina [12.5K]4 years ago
8 0

Answer:

2750 x (1 - 0.21)ˣ

Step-by-step explanation:

Original: 2750

1st week after: 2750 x (1 - 0.21)

2nd weeks after: 2750 x (1 - 0.21) x (1 - 0.21) = 2750 x (1 - 0.21)²

x weeks after:  2750 x (1 - 0.21)ˣ

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