Apopulation of bacteria is growing exponentially according to the model p=100e0.60t initially, there were 100 bacteria, but after how many hours will 400 colonies be present? how much time will it take (where p is the number of colonies and t is measured in hours. ) (round to the nearest tenth).

Time it will take t = 23.1 (round to the nearest tenth)

Step-by-step explanation:

Given: A population of bacteria is growing exponentially;

According to the model;

  ......[1]; where P is the number of colonies and t be the time measured in hours.

After how many hours will 400 colonies be present.

Substitute value of P = 400 in [1];

Divide both sides by 100 we get;

Taking ln both sides we get;

Since;

then;

Divide both sides by 0.06 we get;

or

hours

Therefore, the time it will take is, t = 23.1 (round to the nearest tenth)

my guess would be b and d, but i didn’t actually get out the pen and paper. lol

answer:   expression= p+p*d%

price reduction + sale price = $625

sale price: $p+$p*d%

where d% is the percentage of discount

step-by-step explanation:

original price = p

price went down by $150 price reduction $p*d%

sale price= $ 475

therefore the price before sale is: $625

and the expression that shows the price before sale is: p+p*d%