Question

A certain strain of bacteria is growing at a rate of 25% per hour, and with 1,000 bacteria initially, this event can be modeled by the equation B(t) = 1,000(1.25)t. With this fast growth rate, scientists want to know what the equivalent growth rate is per minute. Using rational exponents, what is an equivalent expression for this bacterial growth, expressed as a growth rate per minute?

A. B(t) = 1,000(1.25)start fraction t over 60 end fraction
B. B(t) = 1,000(1.25)60t
C. B(t) = 1,000(1.0037)t
D. B(t) = 1,000(1.0037)60t

Answer 1

@JJ_Diamond

Answer 2

can you walk me through it so i can see how to get the answer

Answer 3

ok I know the answer and its simple

Answer 4

okok so what do i do

Answer 5

First you know its rate per minute so its going to be one with a 60 in it so c is out

Answer 6

And its 1.25 that the bacteria is growing at

Answer 7

So I just eliminated 2 more choices with one solution and that leaves us with "A" as are only option

Answer 8

oh wow thank you but why wouldn't it be D?

Answer 9

Because it has 1.0037 which it should be 1.25

Answer 10

oh because of the 1.0037 right

Answer 11

oh kook i get it now thank you

Answer 12

i got it wrong tho...

Answer 13

Wait no scratch that my bad I didn't see options b all the way it is "B" sorry

Answer 14

its cool but help me with this one

Answer 15

i had to retake it

Answer 16

In a recent stock market downturn, the value of a $500 stock is decreasing at 1.2% per month. This situation can be modeled by the equation A(t) = 500(0.988)12t, where A(t) is the final amount and t is time in years. Assuming the trend continues, what is the equivalent annual devaluation rate of this stock (rounded to the nearest tenth of a percent) and what is it worth (rounded to the nearest whole dollar) after 1 year?

A. 86.5% and $433.00
B. 13.5% and $433.00
C. 14.4% and $440.00
D. 98.8% and $494.00

Answer 17

ok hold on

Answer 18

d all you need to do is times 500*0.998.

Answer 19

okay thank you

Answer 20

no problem

Answer 21

How did you do on it??

Answer 22

you were wrong again

Answer 23

i did worse