PLEASE HELP !! what is the domain of f(x)=1/3x ?

Which of the following is the missing term, a2, of the geometric sequence in which a1=2 and a3=200

Which of the following is the result of expanding

9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?