Solve for AB

a: 3.6
b: 15
c: 4
d: 10

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches

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)