The independent variable and the dependent variable

Independent variable is temperature and dependent variable is volume

Explanation:

In his experiment a sample of a gas has been taken to find the effect of temperature on the volume of a gas at constant pressure.

To conduct this experiment we will change the temperature of the gas and see the change in its volume.

I other words, volume of the gas will depend on its temperature.

So the independent variable is temperature and dependent variable is volume.

the correct choice is a .

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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.