Question

Please help will fan and medal!!!

Question attached in comments!!

Answer 1

I think it's 2,520 @Susanna

Answer 2

I don't know this one, sorry...

Answer 3

Well, it says t=o and P=1000, so what is A?

Answer 4

oops, I've got to go...

Answer 5

i know it

Answer 6

For bacterial growth you usually model them with an exponential formula:
p(t) = p₀ e^(kt)

p(t) : population at time t (1200)
p₀ : initial population (1000)
k : growth constant
t : time in hours (2)

Plug in what you know and solve for k:
1200 = 1000 e^(2k)

Divide both sides by 1000:
1.2 = e^(2k)

Take the natural log of both sides to cancel e on the right:
ln(1.2) = 2k

Divide both sides by 2:
k = ln(1.2) / 2
k ≈ 0.0911607784

So your completed formula is:
p(t) = 1000 * e^(0.0911607784t)

To figure the population after 13 hours, just plug in t = 13:
p(13) = 1000 * e^(0.0911607784 * 13)
p(13) ≈ 3271

Answer 7

Wait what is e?
@boldjon

Answer 8

oh i messed up i did 13 hours instead of 11

Answer 9

hold up

Answer 10

P(t) = 1000 * (1.2)^(t/5) {after 5 hours, it grows by a factor of 1.2}
P(11) = 1000 * (1.2)^(11/5) ~= 1493 bacteria

Answer 11

1493