Change the equation but the equations first answer has to be the same in other words change the equation but in the end it has to equal the same as the first equation 

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)

Can someone me with the property questions for 12 13 and 14 plz

How do i simply this radical expression?