Math, asked by bhurasaleha, 8 months ago

1. A pharmaceutical company makes a vaccine-producing bacterium that grows at a rate of 1.7% per hour. How many units of this organism must the company have initially to have 1000 units after 5 days? Round to the nearest unit. 2. A quantity grows exponentially at the rate of 7.00% per year for 7 years. Find the final amount if the initial amount is 201 units. Round your answer to the nearest integer. please kindly help me with this questions... ill give an brilliant ans mark this is not fun.. honestly i need an solution to this questions.. answer it as soon as possible

Answers

Answered by amitnrw
0

Given :   A pharmaceutical company makes a vaccine-producing bacterium that grows at a rate of 1.7% per hour.

To find  : How many units of this organism must the company have initially to have 1000 units after 5 day

Solution:

Let say units  = x

Then dx /dt  = 0.017x         ( t is in hrs)

=> dx/ 0.017x  = dt  

integrating both side

(1/0.017) ln (x)  = t    + c₁

=> ln (x)  =  0.017t   + c  

1000 units after 5 days  

5  days  = 5 * 24  = 120 hrs

=> ln(1000)  =  0.017(120) + c

=> 6.908  = 2.04 + c

=> c = 4.868

at t = 0

ln (x)  =  c  

=>  ln (x)  = 4.868

=> x  = 130

130 units of this organism must the company have initially to have 1000 units after 5 days

______________________

Let say units  = x

Then dx /dt  = 0.07x         ( t is in years)

=> dx/ 0.07x  = dt  

integrating both side

(1/0.07) ln (x)  = t    + c₁

=> ln (x)  =  0.07t   + c  

at t = 0   , x =  201

ln (201)  =     + c  

=> c = 5.303

after 7 years

=> ln(x)  =  0.07(7) +  5.303

=>  ln(x)   = 5.793

=> x =  328

328 is the final amount if the initial amount is 201 units

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