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exis [7]
2 years ago
9

If the number of bacteria in a colony doubles every 210 minutes and the population is currently 8,000 bacteria, what will the po

pulation be in 630 minutes and is it modeled by a linear function or an exponential function?
A) 24,000; linear function
B) 24,000; exponential function
C) 64,000; linear function
D) 64,000; exponential function
Mathematics
1 answer:
Stells [14]2 years ago
8 0

Answer:

D is the answer

64,000 exponential function  

Step-by-step explanation:

64,000 exponential function  

The number of bacteria in a colony doubles  every 210 minutes.

The population of bacteria = 8000

Determine how many times the population will double.

\frac{630}{210}

 = 3

Multiply the population by 2 a total of 3 times.

8000 × 2³ = 64,000

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3 years ago
Paul is three times as old as Mary and Peter is four times as old as Mary,If the sum of their ages is 64, how old are Peter,Paul
uysha [10]
Let Mary's age be x.

Paul is three times as old as Mary, so Paul's age would be 3x.

Peter is four times as old as Mary, so Peter's age would be 4x.

The sum of their ages is 64
⇒ Paul's age+ Peter's age+ Mary's age= 64
⇒ 3x+ 4x+ x= 64
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Paul's age is: 3x= 3*8= 24

Peter's age is: 4x= 4*8= 32

Final answer: Paul is 24 years old.
Peter is 32 years old.
Mary is 8 years old.

Hope this helps~
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Answer:

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The bearing of B from A is 28 degrees, approximately

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