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4 years ago

Brian's comic book collection increased from 120 to 150 comic books. By what percentage did his collection increase?

1 answer:

5 0

To do these use the new number minus the old number, all divided by the old number

(150-120)/120=
30/120=
¼.

the collection increased by 25%

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Step-by-step explanation:

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3 years ago

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3 years ago

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kipiarov [429]

Answer:

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Where x represent the number of period of times of 22 minutes. If we want to know the value of the population after 66 minutes we need to find the value of x on this way:

$x = 66 minutes *\frac{1period}{22 minutes}= 3$

So then we need to replace the value of x =3 and we got:

$y= 300 (2)^3 = 2400$

Step-by-step explanation:

For this case we have the following function:

$y = 300 (2)^x$

Where x represent the number of period of times of 22 minutes. If we want to know the value of the population after 66 minutes we need to find the value of x on this way:

$x = 66 minutes *\frac{1period}{22 minutes}= 3$

So then we need to replace the value of x =3 and we got:

$y= 300 (2)^3 = 2400$

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hammer [34]

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4 years ago