Question

after 6 years, federico earned $1485 in simple interest from a CD into which he initially deposited $9000. what was the annual interest rate of the CD? A. 11% B. 2.75% C. 8.25% D. 5.5%

Answer 1

It is B because the total percent will be 16.5 and 10% is about 1000 the do the math or if you do .16 (9000) you get 1440 :)

Answer 2

then add the extra .05 percent