Find the length of the radius of the following circle. (x+2)^2+y^2=10

This is different from the first one can someone me

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)

Identify the parent function that can be used to graph the function f(x)=3(x-9)2