Bacteria colonies can triple in size every 4 days. if you start with 40 bacteria microorganisms, how large would the colony be after 20 days?

The size of the bacteria colony after 20 days = 9720

Step-by-step explanation:

The number of bacteria micro organism at the starting = 40

Now, The size of the bacteria colonies triple in size every 4 days

and we need to find the size of the bacteria colony after 20 days.

So, after 4 days the size of bacteria colony = 40 × 3

                                                                        = 120

After 8 days, The size of the bacteria colony = 120 × 3

                                                                           = 360

After 12 days, The size of the bacteria colony = 360 × 3

                                                                            = 1080

After 16 days, The size of the bacteria colony = 1080 × 3

                                                                            = 3240

After 20 days, The size of the bacteria colony = 3240 × 3

                                                                                = 9720

Therefore, The size of the bacteria colony after 20 days = 9720

i think the correct option is the second option.

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %