Post a New Question

Math

posted by .

your aunt gives you a check on your birthday each year. on your first birthday , she gives you a check for one cent. the next year she gives you 3 cents , then 9. each year she triples the amount of the previous year 's check. how old will you be when she gives you a check worth more than 1000$ ? how much money will you receive on your 18th birthday?

  • Math -

    1c. = 3^0,
    3c = 3^1,
    9c. = 3^2,
    27c = #^3.
    So we have base 3 numerals.
    A = 3^(n-1). A = Amount in cents @ nth year.

    a. 3^(n-1) = 100,000 cents.
    (n-1)Log3 = Log100,000,
    n-1 = Log100,000 / Log3 = 10.5,
    n = 11.5 years of age.

    b. A = 3^(18-1),
    A = 3^17 = 129,140,163 cents,
    A = $1,291,401.63.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. dividing a polynomial by a polynomial

    (-6v^2 - 4 + 9v +v^3)/ (v - 4)i am just a little lost can someone explain this to me. thanks. Arrange the polonomial in descending order... v^3-6v^2 +9v -4 Then divide. v-4 !v^3-6v^2 +9v -4 The first term is v^2, so v^2*(v-4) is v^3-4v^2 …
  2. accounting

    Doing a balance sheet. Trying to understand what Bal c/d, and Bal d/d means. It gives me the profit for the year then the payout also gives me the earnings for the year and then the two quotes above which I cannot find the definition …
  3. General

    Doing a balance sheet. Trying to understand what Bal c/d, and Bal d/d means. It gives me the profit for the year then the payout also gives me the earnings for the year and then the two quotes above which I cannot find the definition …
  4. Finance

    8. Assume you just turned 28. You want to accumulate $3.5 million by your 65th birthday. Beginning next year, you will invest equal amounts each year until your 60th birthday. Your twin brother has the same goal, but he will wait 4 …
  5. Algebra 2

    Question is about Step Functions:(between" " are all floor functions. The formula W=d+2m+"(3(m=1)/5)"+y+"y/4" -"y/100" + "y/400" + 2 gives the day of the month of the given date; m = the number of the month in the year with January …
  6. math

    1. First of all, pick the number of times a week that you eat chocolate. This number must be more than one but less than ten. 2. Multiply this number by 2 (just to be bold). 3. Add 5 (for Sunday). 4. Multiply it by 50. 5. Add 1750. …
  7. Maths

    Grandpa places money in an account on your first birthday and will place that same amount in the account every year, ending with your 18th birthday. So there is a total of 18 deposits starting on first birthday. He expects to earn …
  8. Math

    You went to lunch with your friend and the bill is $19.00 your lunch is $3.00 more than your friends. How much was your friends lunch?
  9. math

    uncle gives baby 25 dollars on her first birthday, 50dollars on second doubling act each year. I need help with an equation
  10. Math

    A company has 100,000 subscribers. There are 3 types of subscription: a $99 version, a $350 version and a $1000 version. The first group gives 50% of the customers, the second gives 30%, and the third gives 20%. The average subscription …

More Similar Questions

Post a New Question