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nikklg [1K]
3 years ago
11

A store had 100 t-shirts. Each month, 30% of the t-shirts were sold and 25 new t-shirts arrived in shipments. Which recursive fu

nction best represents the number of t-shirts in the store, given that f(0) = 100?
Mathematics
2 answers:
Mashutka [201]3 years ago
5 0

Answer:

f(a_n) = 0.7f(a_{n-1}) + 25

Step-by-step explanation:

The number of t-shirts a in month n is 70% of the number of t-shirts in month n-1 plus 25 because they always sell 30% of the t-shirts and get 25 t-shirts in shipments. f(0)=100 can be included as an after-thought.

jekas [21]3 years ago
4 0

Answer: The recursive formula is given by

f(a_n)=0.70f(a_{n-1})+25

Step-by-step explanation:

Since we have given that

Number of t-shirts = 100

f(0) = 100

Each time there is 30% of the t-shirt were sold and 25 new t-shirts arrived in shipments.

So, it becomes,

f(a_n)=(1-0.30)f(a_{n-1})+25\\\\f(a_n)=0.70f(a_{n-1})+25

Hence, the recursive formula is given by

f(a_n)=0.70f(a_{n-1})+25

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