<u>Answer-</u>

<u>Solution-</u>
Here, n represents the number of months and f(n) represents the number of laptops in the store after n months.
As the store had 150 laptops in the month of January or at the beginning.
So 
Every month, 20% of the laptops were sold and 10 new laptops were stocked in the store.
As 20% of laptops were sold, so 80% were in the store.
So, after one month total number of laptops in the store,


Again after one month total number of laptops in the store,


Analyzing the pattern, the recursive function f(n) will be,

Answer:

Step-by-step explanation:
we know that
The speed is equal to divide the distance by the time
so
The distance is equal to multiply the speed by the time
we have



Convert mixed number to an improper fraction


substitute

Convert to mixed number

Answer:
The price Mr. Randall paid = 4 * (20-5)
Step-by-step explanation:
Answer:
y=450+40x y=975-65x
Step-by-step explanation:
at five months they will have the same amount of money in their accounts
Answer:
Look at the picture above
Hope this helps you
Do mark me as brainliest :)