Carbon dioxide concentrations over the past 400,000 years Today
1
400
350
300
w
250
CO, concentration (ppm)
ruhan
200
150
100
50
0
400,000 BCE
300,000 BCE
200,000 BCE
100,000 BCE
Year
Complete the sentence.
Before the last century, the highest carbon dioxide concentration occurred roughly
325,000 years ago. The atmospheric concentration of carbon dioxide today is about
ppm higher than it was at that time.
50
100
150
200

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

that the claims meet official rules.

don't misinterpret the claims