Question 1 is fairly straightforward. Since only 12 years have passed the population will only increase by . So the population will increase by:

Moving on to question 2. First of all to get your position you need to integrate your formula for velocity and take into account the constant:

To find the value for the constant use the information given when t= 0, x = -2:

Formula for

To find where the particle is you just need to put each of the values asked for into the equation in place of t.

Finally for 3:

Rearrange the equation so x terms are all on the same side and the same with the y terms

Then integrate to get:

Rearrange to make find an equation for y: