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. 2.75% b.5.5% c. 8.25 d.11%

Radii ok and nl are perpendicular to om because of the radius-tangent theorem. by definition of perpendicular, angles kom and lnm are right angles. this means that triangles kom and lnm are right triangles. angle lmn is common to both right triangles, so by the triangles kom and lnm are similar.

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?

How to simply and write the answer n a whole number