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1 answer:
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Answer:
Step-by-step explanation:
Suppose, is initial amount in the saving account,
Here, the annual interest rate is 6% and additional amount in each year is $ 50,
So, the amount after one year,
Amount after 2 years,
Amount after 3 years,
................................., so on....
Hence, by following the pattern,
The amount after n years,
Which is the required recurrence relation for the amount of money in a savings account
= 2a - 1
2() = 2(2a - 1) <em>multiplied both sides by 2 </em>
ab = 4a - 2 <em>distributed the 2 on the right side</em>
ab - 4a = -2 <em>subtracted 4a from both sides</em>
a(b - 4) = -2 factored out "a" from the left side
a = <em>divided (b - 4) on both sides</em>
Answer: a =