Write the number that can be shown with this many hundreds tens and ones 1 hundred 2 tens 18 ones

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)

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line

1. how do you convert the repeating, nonterminating decimal 0. to a fraction? explain the process as you solve the problem.