In the figure below, tan B - 3. If BC = 15 and DA = 3, what is the length of DE ? B
E
с
09
O 12
06
O 8

6

Step-by-step explanation: Because I got this answer correct on a test.

the answer is 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;