word problem

[salma]

The number of bacteria in a culture can be approximated by the growth formula =1, 500e^0.7t where t is in hours. If
we start with 1,500 bacteria, how long will it take to have a million bacteria?
A 2.82 hours
B 9.29 hours
C 4.03 hours
D 6.85 hours

....Hellpp!

 

[Deleted member 4993]

The number of bacteria in a culture can be approximated by the growth formula =1, 500e^0.7t where t is in hours. If
we start with 1,500 bacteria, how long will it take to have a million bacteria?
A 2.82 hours
B 9.29 hours
C 4.03 hours
D 6.85 hours

....Hellpp!

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[salma]

well the thing is I dont even know how to start. Im guessing I just solve for t? but then I dont get how that will give me the "million bacteria" ??

 

[Deleted member 4993]

well the thing is I dont even know how to start. Im guessing I just solve for t? but then I dont get how that will give me the "million bacteria" ??

Correct....

You have to solve for t in:

1,000,000 = 1, 500 * e^0.7t