$800 is deposited in an account that pays 9% annual interest,
compounded annually. Find the
balance after four years.

2x+3y=12 x-y=6 solve the following system equations

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Someone me i need with this stuff