What is the length of BC?

A.7
B.12
C.13
D.17
E V60
F. V119

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)

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

What is the slope of the line passing through the points (-5, 7) and (-3,5)?