A student is measuring the circumferences of pine trees for an experiment. She measures 50 trees using a ruler that measures to the nearest centimeter.

Which statement describes a change that could help improve the results of

her experiment?

Her measurements will be more accurate if she uses a cloth tape

measure instead of a ruler.

Explanation: (apex)

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.