A population of bacteria in a lab, p(t), can be modeled by the function p(t)=500(0.80)t, where t represents the number of days since the population was first counted. Explain what 500 and0.80 represent in the context of the problem

Initial population = 500

Decay factor of population =0.80

Step-by-step explanation:

We know that , the general exponential function is given by :-

...(i)

Where , A = initial value

b= growth factor ( if b>1)

or b= decay factor  ( if b<1)

x= Time perid

Given : A population of bacteria in a lab, p(t), can be modeled by the function , where t represents the number of days since the population was first counted.

By comparing to (i) , we get

i..e Initial population = 500

Also as 0.80<1 , therefore we have decay factor of population =0.80

i think the correct option is the second option.

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