math problem (please help)

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  1. Math Problem (please help)

    On the day of a child's birth, a deposit of $30,000 is made in a trust fund that pays 3% interest, compounded continuously. Determine the balance in this account on the child's 30th birthday. (Round your answer to two decimal places.)

    asked by Angie on September 9, 2014
  2. Math Problem (please help)

    A company that manufactures bicycles estimates that the profit P (in dollars) for selling a particular model is given by the equation shown below, where x is the advertising expense (in tens of thousands of dollars). P = –35x3 + 2500x2 – 275000, 0 ≤

    asked by Ada on September 12, 2014
  3. Math Problem (please help)

    Find all the zeros of the function. (Enter your answers as a comma-separated list.) f(x) = (x + 3)(x − 7)2 X=

    asked by Ada on September 15, 2014
  4. Math Problem (please help)

    Use Hooke's Law for springs, which states that the distance a spring is stretched (or compressed) varies directly as the force on the spring. A force of 265 newtons stretches a spring 0.15 meter (see figure). (a) How far will a force of 120 newtons stretch

    asked by Ada on September 10, 2014
  5. Math Problem (please help)

    Evaluate the function at the specified value of the independent variable and simplify. f(x) = (2x^2 + 8x)/(5x^3 + 40) at x = 3.

    asked by Ada on September 26, 2014
  6. Math Problem (please help)

    State sales tax is based on retail price. An item that sells for $115.99 has a sales tax of $8.12. Find a mathematical model that gives the amount of sales tax y in terms of the retail price x. (Round the coefficient to two decimal places.) y = Use the

    asked by Angie on September 10, 2014
  7. Math Problem (please help)

    Write the logarithmic equation in exponential form. ln e = 1 How do I do that?

    asked by Angie on September 9, 2014
  8. math problem (please help)

    What are the dimensions of a rectangular tract of land if its perimeter is 70 kilometers and its area is 300 square kilometers? km (smaller value) akm (larger value)

    asked by angie on November 24, 2014
  9. Math Problem (please help)

    The simple interest on an investment is directly proportional to the amount of the investment. By investing $4250 in a certain bond issue, you obtained an interest payment of $106.25 after 1 year. Find a mathematical model that gives the interest I for

    asked by Angie on September 9, 2014
  10. math problem (please help)

    Find the inverse function of f(x) = (7x-8)/(3x -1).

    asked by ada on September 26, 2014
  11. Math Problem (please help)

    Consider the following function. g(x) = 6x^4 − 13x^3 − 144x^2 + 325x − 150 (a) Use the zero or root feature of a graphing utility to approximate the zeros of the function accurate to three decimal places. (Enter your answers as a comma-separated

    asked by Ada on September 15, 2014
  12. Math Problem (please help)

    A rectangular classroom seats 252 students. If the seats were rearranged with three more seats in each row, the classroom would have two fewer rows. Find the original number of seats in each row.

    asked by Ada on September 26, 2014
  13. Math Problem (please help)

    Find the zeros of the function algebraically. f(x) = 36x^4 − 25x^2 x = (smallest value) x = x = (largest value)

    asked by Ada on September 18, 2014
  14. Math Problem (please help)

    Find all the zeros of the function. When there is an extended list of possible rational zeros, use a graphing utility to graph the function in order to discard any rational zeros that are obviously not zeros of the function. (Enter your answers as a

    asked by Ada on September 12, 2014
  15. Math Problem (please help)

    A small software company invests $30,000 to produce a software package that will sell for $64.95. Each unit can be produced for $42.25. How many units must be sold to break even? How many units must be sold to make a profit of $100,000?

    asked by Angie on August 28, 2014
  16. Math Problem (please help)

    A small fast-food restaurant invests $4,000 to produce a new food item that will sell for $4.59. Each item can be produced for $2.19. (a) How many items must be sold to break even? (Round your answer to the nearest whole number.) items (b) How many items

    asked by Angie on August 28, 2014
  17. math problem (please help)

    Find ( f + g)(x). f (x) = 3x^2 – 2 g(x) = 2x^2 – x – 2 a. ( f + g)(x) = x^4 + x b. ( f + g)(x) = 5x^4 – x – 4 c. ( f + g)(x) = x^2 + x d. ( f + g)(x) = 5x^2 – x – 4 e. ( f + g)(x) = –5x^2 + x + 4

    asked by ada on September 26, 2014
  18. Math Problem (please help)

    Find the following. f(x) = 7x − 9, g(x) = 8 − x A:(f + g)(x) = B:(f − g)(x) = C:(fg)(x) = D:(f/g)(x) =

    asked by Ada on September 26, 2014
  19. Math Problem (please help)

    Find the zeros (if any) of the rational function. (If there are no zeros, enter NONE.) g(x) = (x^3-64)/(x^2+2) need help solving

    asked by Angie on September 9, 2014
  20. Math Problem (please help)

    IF x = 3 How much is 2(6x) + 2 (W)

    asked by Anonymous on September 12, 2014