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Mathematics 8 Online
OpenStudy (bmxlifestyle):

help!!! i will give a medal

OpenStudy (anonymous):

What's your ?

OpenStudy (bmxlifestyle):

i need help with task 1

OpenStudy (anonymous):

Problem?

OpenStudy (anonymous):

Task 1 Bacteria are the most common example of exponential growth. Research and find a bacterium that grows exponentially each hour, and determine how much it grows per hour. a. Suppose you start with a single bacterium. Make a table of values showing the number of bacteria that will be present after each hour for the first 6 hours. Then determine how many bacteria will be present once 24 hours have passed. b. Explain why this table represents exponential growth. c. Using this example, explain why any number raised to the zero power is equal to one. d. Write a rule for this table. e. Suppose you started with 100 bacteria, but they still grew by the same growth factor. How would your rule change? Explain your answer

OpenStudy (bmxlifestyle):

can you help me with it?

OpenStudy (anonymous):

Of course!

OpenStudy (anonymous):

This will take some time though, lets focus on both a's

OpenStudy (anonymous):

Is this science?

OpenStudy (bmxlifestyle):

no its algebra

OpenStudy (anonymous):

Ok, you understand what a is saying right?

OpenStudy (bmxlifestyle):

not really

OpenStudy (anonymous):

bacterium that grows exponentially each hour, and determine how much it grows per hour.

OpenStudy (bmxlifestyle):

yeah i get that but i dont know how to make a table and it doesnt say what to start at for the bacteria

OpenStudy (anonymous):

time #bacteria 0 1 1 2 3 4 4 8 5 16 6 32 b.Explain why this table represents exponential growth. When x increases by uniform steps, the ratios of succeeding y values is 2. There is a constant factor of 2. c.Using this example, explain why any number raised to a power of zero isequal to one. d.Write a rule for this table. e.Suppose you started with 100 bacteria, but they still grew by the samegrowth factor. How would your rule change? Explain your answer

OpenStudy (anonymous):

hour # Ecoli bacteria 0 1 1 2 3 4 4 8 5 16 6 32

OpenStudy (bmxlifestyle):

how would you do the 24 hour one?

OpenStudy (anonymous):

I'll explain that in a minute

OpenStudy (anonymous):

hour # Ecoli bacteria 0 1 1 8 2 64 3 512 4 4096 5 32768 6 262144

OpenStudy (anonymous):

This is 24hr expression y = 1*8^t plug in t = 24 y = 8^24, its a big number

OpenStudy (anonymous):

4,722,366,482,869,645,213,696 bacteria

OpenStudy (anonymous):

So do you get it now?

OpenStudy (bmxlifestyle):

a little

OpenStudy (anonymous):

Ok

OpenStudy (anonymous):

Can I have a blue ribbon please?

OpenStudy (anonymous):

thnx

OpenStudy (anonymous):

Make sure to fan me!

OpenStudy (anonymous):

If you can

OpenStudy (bmxlifestyle):

can you do c,d, and e though

OpenStudy (bmxlifestyle):

@Zbarnum826

OpenStudy (anonymous):

I did!

OpenStudy (bmxlifestyle):

can u explain it a little more @Zbarnum826

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