Khi hệ số co dãn của cầu theo thu nhập âm thì hàng hóa đó là:A. Hàng hóa thứ cấpB. Hàng hóa thiết yếuC. Hàng hóa cao cấpD. Hàng hóa độc lập

c.

step-by-step explanation:

yes, gavin is right.

step-by-step explanation:

gavin is correct. 

this problem is about converting 9% per year to how many percent per quarter. the rate is still the same. it only differed in the time period. so, through dimensional analysis,

9% per year  × (1 year / 4 quarters) = 2.25% per quarter

if he was asked to convert 9% per year to how many percent per quarter  compounded quarterly, then you will not simply divide by four. this is because compounding is not linear.

hope this , have a good day. c;

add them

step-by-step explanation:

idk you did not give the options or numbers so you cant solve it