Which change would result in an
increase in the rate at which water
evaporates from an outdoor swimming
pool?
a) the surface of the water is covered
with white plastic.
b) water is added to the pool each
day.
c) cloud cover decreases.
d) wind velocity decreases.

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.

not too sure thinking all accelerations are pointed down