Which of the following correctly describes the state of matter of one of the samples? a. d is a liquid because it retains its shape b. d is a solid because it retains its shape. c. c is a liquid because it has a definite volume. d. c is a solid because it has an indefinite volume.

Its B

Im pretty sure im right, sorry if not

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.