Question

The number of bacteria in experiment can be presented by f(x) = 4 where x represents the numbers of hours

What is x when fx=64
retake!!!

Answer 1

Answer: A

Explanation:

4^3=64.

Answer 2

Option:-

• A ) x = 3; in the 3rd hour there will be bacteria.

`\:`

Given:-

• 
  `\sf{f ( x ) = 4^x}`

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To prove:-

• 
  `\sf \: f ( x ) = 64`

`\:`

Solution:-

• 
  `\sf \: f ( x ) = 4^x.`

`\:`

put the value of x = 3

• 
  `\sf \: f ( 3 ) = 4^3`

`\:`

• 
  `\sf \: f ( 3 ) = 64`

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hope it helps! :)