What is the physics primer?
a. a set of mathematics topics that are relevant to introductory physics courses.
b. a list of the most important formulas used in introductory physics courses.
c. an detailed explanation of all of the mathematics you will use in your introcuctory physics course.
d. a tutorial of the most important physics concepts covered in introductory physics courses.

A. A set of mathematics topics that are relevant to introductory physics courses.

Explanation:

Physics Primer consists of tutorials, videos, and answers to specific questions, the main idea is to build a solid structure of math concepts for introductory physics. Another great thing about Physics Prime is that it helps students to visualize problems and solve them from different perspectives. The concepts built throughout the course can positively impact the result of the student especially if the course is taken before the physics introductory course.

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.