What is per capital income? what do you think it is expressed in doller

What would happen if airlines and baseball stadiums priced all seats the same instead of using variable pricing

Bonus question: according to wikipedia, in chinese philosophy yin and yang "describes how seemingly opposite or contrary forces may actually be complementary, interconnected, and interdependent." what are some examples from the story that amy tan may have intentionally incorporated elements of yin and yang philosophy into this story? select 2.

What would the world be look like if we live without having news?