Can someone with 13,14,15,and 16 will mark brainliest answer for the person who answers first and it has to be correct

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)

Combine the information in the problem and the chart using the average balance method to solve the problem.

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove