Can someone tell me the answer

Can you also show me How

What is the multiplicative rate of change of the exponential function shown on the graph?

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

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)