A bacteria culture starts with 40 bacteria and grows at a rate proportional to its size. After 2 hours there are 180 bacteria. 1) Find the number of bacteria after 5 hours.

2) After how many hours will there be 10,000 bacteria? Round to the nearest thousandth.

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

answer: y=0 if that is what u r looking for

yes the data was not prsented

step-by-step explanation: