Math

posted by .

Can you check my work Please?

Let N(t) be the number of bacteria after t days. Then N(t) = Pa^t for some constants P and a. Measurements indicate that N(4) = 5600 and N(8) = 362, 000

1. Write down the formula for N(t) using the rounded values of a and P. (But remember to use the more precise stored values when you use the formula!)
2. Evaluate N(7), N(9), and N(11). (Give answers to the nearest bacterium.)

1. My formula: 86.6(2.84)^t (these are rounded values)

2. (Using non Rounded Values I got the following)
N(7) = 17667 N(9) = 1026452 N(11) = 8252755

  • Math -

    I assume this is a continuation of the question from yesterday.
    http://www.jiskha.com/display.cgi?id=1329179895

    for N(7) I got 127667 using memory-stored "exact" values of a and P
    Your values for N(9) and N(11) are correct

    looks like you just had a typo.

  • Math -

    Yes, it was from yesterday, sorry if I should've just put this in that post. But thanks a bunch for checking my work.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. algebra - please help

    Let N(t) be number of bacteria after t days. N(t) = Pa^t for some constants P and a. N(2) = 5400 and N(6)=382,000. a)before working problem, estimate value of N(5). b) write down 2 equations for P and a, one when t=2 and one when t=6, …
  2. algebra - exponentials

    My question is how do I know that N increases by a factor of 2.9 each day. (see below) Let N(t) be number of bacteria after t days. N(t) = Pa^t for some constants P and a. N(2) = 5400 and N(6)=382,000. a)before working problem, estimate …
  3. Math

    Let N(t) be the number of bacteria after t days. Then N(t) = Pa^t for some constants P and a. Measurements indicate that N(4) = 5600 and N(8) = 362, 000. a. Before working the problem, estimate the value of N(7), the number of bacteria …
  4. Math

    Can you Check my work please? Let N(t) be the number of bacteria after t days. Then N(t) = Pa^t for some constants P and a. Measurements indicate that N(4) = 5600 and N(8) = 362, 000. b. Write down two equations for P and a, one when
  5. calculus

    2. The rate of change in the number of bacteria in a culture is proportional to the number present. In a certain laboratory experiment, a culture has 10,000 bacterial initially, 20,000 bacteria at time t1 minutes, and 100,000 bacteria …
  6. math

    The number of bacteria in a culture is modeled by n(t)=1710e071t (a) The initial number of bacteria is (b) The relative rate of growth of this bacterium population is (c) The number of bacteria after 3 hours is (d) After how many hours …
  7. Math

    he number of bacteria in a culture is modeled by n(t)=1710e071t (a) The initial number of bacteria is (b) The relative rate of growth of this bacterium population is (c) The number of bacteria after 3 hours is (d) After how many hours …
  8. math

    The number of bacteria in a culture is modeled by: n(t) = 1330e^(0.42t) (a) The initial number of bacteria is: (b) The relative rate of growth of this bacterium population is: (c) The number of bacteria after 3 hours is: (d) After …
  9. Math

    There are 3000 bacteria in a day, if the number of bacteria double per 2 days , how many bacteria can we expect to have in 15 days?
  10. Math- PLEASE HELP!!

    At noon, Professor Simon has a petri dish with 10,000 cells of Bacteria A. In another petri dish, he has 33,000 cells of Bacteria B. Every hour, Bacteria A grows by 8%. Every hour Bacteria B cells die off, decreasing the number of …

More Similar Questions