Question

Em um experimento foram colocados, em um mesmo recipiente, dois tipos de microrganismos, A

Answer 1

Answer:

(1)

type-A:

$f(0)=1$

type-B:

$g(0)=9$

(2)

$t=0.746min$

Step-by-step explanation:

We are given

type-A:

$f(t)=t+1$

type-B:

$g(t)=9^{1-t}$

(1)

At initial means t=0

For type-A:

we can plug t=0

$f(0)=0+1$

$f(0)=1$

For type-B:

we can plug t=0

$g(0)=9^{1-0}$

$g(0)=9$

(2)

we can set f(t)=g(t)

and then we can solve for t

$t+1=9^{1-t}$

we can draw graph of f(t) and g(t)

and then we can find intersection point

so, we got

$t=0.746min$