PRACTICE Problems 25. The graph in Figure 2-22 describes the motion of a
cruise ship during its voyage through calm waters.
The positive d-direction is defined to be south.
a. What is the ship's average speed?
b. What is its average velocity?

do you have an image b/c it says figure 2-22

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.