Round 47125 to the nearest ten, nearest hundred, nearest thousand, and to the nearest ten yhousand

What is the order of these fractions from least to greatest 2/3 7/10 5/8 65/100

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)

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1