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Oliga [24]
3 years ago
5

The number of bacteria in a Petri dish increases by 18% every hour. If there were initially 200 bacteria placed in the Petri dis

h, which function can be used to determine the number of bacteria in the Petri dish in exactly x hours?

Mathematics
1 answer:
In-s [12.5K]3 years ago
5 0

Answer:

Step-by-step explanation:

an exponential equation has the form y=ar^x where y=final amount, a=initial amount, r=rate, and x=time, in this case

y=200(1.18)^x

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3 years ago
at the grocery store avacados cost three times as much as grapes kiwis cost .75 less than avocados if i spent a total of 16.75 h
Romashka [77]
A - avocados, G - grapes, K - kiwis.
We know that: A = 3G, K = A - 0.75
So: G = A / 3
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5 0
3 years ago
Harry purchased some fruits and sold 1/2 of them at a gain of 60% and 1/4 of them at a
Alborosie

Answer:

40% gain.

Step-by-step explanation:

Suppose he bought 100 fruit at a cost of $40.

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He sold 1/4 ($10) for 10*1.2 = $24.

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percent gain = 16 * 100 / 40

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3 years ago
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