Combine the like terms of 3y and 1/2

After 20 days there will be 25600 zombies.

Step-by-step explanation:

Given :

A super-deadly strain of bacteria is causing the zombie population to double every two days. currently, there are 25 zombies.

To Find: After how many days will there be 25600 zombies?

Solution :

1 . The given situation will have the exponential function .

Exponential formula :

a = initial amount

b is the growth or decay rate

x = number of time intervals that have passed

So, in the given situation

Since initially there are 25 zombies .

So, a = 25

Since we are given that  zombie population to double every two days.

So,b = 2

x = x/2

y = 25600

Substituting the values in the formula :

On comparing L.H.S with R.H.S

⇒

Thus after 20 days there will be 25600 zombies.

2. Now the current population is 5,000,000,000.i.e. a = 5,000,000,000

So, to find after how many days will there be no humans left(y=0)

So, using formula

Since log 0 is not defines hence not possible.