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dondon16 dondon16
  • 10-06-2016
  • Mathematics
Answered

A store had 235 MP3 players in the month of January. Every month, 30% of the MP3 players were sold and 50 new MP3 players were stocked in the store.


Which recursive function best represents the number of MP3 players in the store f(n) after n months?

Verified Answer :

Hagrid
Hagrid Hagrid
  • 22-06-2016

We let f(0) = 235
After 1 month,
f(1) = 235(0.7) + 50
After 2 months,
f(2) = 2350.70.7+ 502
And so on..

Therefore, we can represent the number of MP3 players in the store after n months with the function:
f(n) = 235 (0.7)^n + 50n

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