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Answer to Question #27090 in Algebra for Nataly

Question #27090
To save money for holiday presents, a person deposits $5 in a savings account on January 1, and then deposits an additional $5 every week thereafter until Christmas.
a. Write a sequence for the money in that savings account for the first 10 weeks of the year.
b. Write the general term of the sequence in part a.
c. If there are 50 weeks from January 1 to Christmas, how much money will be available for spending on Christmas presents?
Expert's answer
If N weeks you will be deposited for $ 5, you'll have 5*Ndollars.
a. $50.
b. N= 10. After 10 weeks You will have available for spending 10*5 = $50.
c.N = 50. After 50 weeks You will have available for spending 50*5 = $250.
If the person deposited on the deposit account, not on the savings account he'd got more according to the composite per cent formulae.

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