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2 years ago

What is the discontinuity of the function f(x) = the quantity of x squared minus 3 x minus 28, all over x plus 4?

Mathematics

2 answers:

juin [17]2 years ago

6 0

Answer:

(−4, −11)

I took this test and got it correct :) You should gimme brainliest answer fam

asambeis [7]2 years ago

4 0

You get discontinuity when in this function you divide by 0. You will divide by 0 if x+4 = 0. That means that x = -4

y value for this example doesn't matter because for x = -4 you will have discontinuity. Since the only answer that has -4 as x value is D, that has to be solution.

Answer is D

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It is given that,

Researchers recorded that a group of bacteria grew from 100 to 7,000 in 14 hours.

Therefore, the bacteria has grown from 100 to 7000 in 14 hours.

To calculate number of bacteria grown in 14 hours :

⇒ 7000 - 100 = 6900

6900 bacteria grows in 14 hours. We need to find out the growth of bacteria in 1 hour in order to calculate its growth in 32 hours.

To calculate number of bacteria grown in 1 hour :

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⇒ 6900 / 14

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To calculate number of bacteria grown in 32 hours :

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⇒ 15771.2

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∴ The number of bacteria grown in 32 hours is 15771

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Read 2 more answers

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