Use the values provided to calculate the initial voltage
at the primary winding.
V1 =
Primary
winding
Secondary
winding
V =
= 120

There's not enough information here to calculate the answer.

Somewhere nearby, it tells you something about the numbers of turns of wire on the primary and secondary windings, but you didn't pass that info on to us. No answer is possible without it.

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.