What is the answer to Economics 10e chapter 22 question 14?

I have another Economics question, can someone help explain this graph?

What is economics constants?

Economics question!!!

The fundamental reason to study economics is to study ____.     how choices are made     how production is determined     how countries trade with each other     how finances are determined

(Studying Economics) According to the text, economics majors on average make more money than most other majors and have more job opportunities. Are these the primary motivations one might have for studying economics? What are your motivations for studying economics?

If the price of a pie is 12, what is the maximum number of pies she could buy in a week?

What are three reasons to study economics?