A culture started with 5000 bacteria. after 2 hours, it grew to 6500 bacteria. Predict how many bacteria will be present after 18 hrs

First find the rate of growth

The formula is

A=p e^rt

A 6500

P 5000

R rate of growth?

E constant

T 2 hours

Solve the formula for r

R=[log (A/p) : log (e) ]:t

R = (log (6,500:5,000) : log (e)) : 2

R=0.1312 (rate of growth)

Now predict how many bacteria will be present after 18 hrs

A=p e^rt

A?

P 5000

R 0.1312

E constant

T 18 hours

A=5,000*e^ (0.1312*18)

A=53,039.5 round your answer to get

A=53040 ... answer