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dolphi86 [110]
3 years ago
13

A culture is grown with a population of 45 million cells. The cell population is found to double every hour. What will the popul

ation be after four hours?
Mathematics
2 answers:
Alexandra [31]3 years ago
6 0
45 million * 2^{4} = 45million * 16 = 720million

Or you can use 
y=Ae^{kt}
A is equal to 45 million
To find the rate, k, we can plug in:
90million=45million*e^{k*1}

2=e^{k}
k=ln(2)
y=4.5*10^{7}*e^{t *ln2}
Knowing that t = 4
y = 4.5*10^{7}*e^{ln(2)*4}

y = 720 million
nikklg [1K]3 years ago
5 0
The population will be 360 million people after four hours
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4 0
3 years ago
A municipality has budgeted R80 000 for putting up new street name boards The street name boards cost R134 each. How many new st
ivanzaharov [21]

The Municipality we be able to set up 597 street name boards with R2 left in the budget.

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<h3>Number of Street Boards in the Budget</h3>

The number of streets boards that can be produced in the budget is calculated by dividing the total amount budgeted by the cost of each street board. This is done mathematically as

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We would have a total of 597 street names on the budget with some amount left.

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The Municipality we be able to set up 597 street name boards with R2 left in the budget.

Learn more on division of numbers here;

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Step-by-step explanation:

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