Question

Need some help with Pert :
The population of a city is given by P below, where t is time in years. According to this model, how many years will it take for the city to have a population of 100,000?
P=35000e^0.25(t)
I need help with what steps i need to take.

Answer 1

just set P = 100000 then solve for t

Answer 2

yeah thats the part i need help with

Answer 3

how would i set that up?

Answer 4

100000=35000e^(0.25t)

Answer 5

i use natural log after that correct?

Answer 6

divide both sides by 35000 first

Answer 7

then ln both side

Answer 8

i got the answer of 21.02

Answer 9

nope

Answer 10

ln2.86=.25t
1.05=.25t
divide both by .25
21.02=t

Answer 11

hmm lets see

Answer 12

1.05/0.25 = 4.199

Answer 13

but you should let the whole number when taking ln (2.857142857)

Answer 14

it would be = 1.049822124

Answer 15

divided by 0.25= 4.199288498

Answer 16

oh so i would only average out the number at the end

Answer 17

that's the number of year!!!

Answer 18

lol yea

Answer 19

be careful, in this case, they ask for year. If they ask for day or hour, you must leave the decimal number to calculate. :) khakha

Answer 20

hmm okay :)
thank you for your help! much appreciated<3

Answer 21

np