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What is the order of magnitude for the number of liters in a large bottle of soda served at a party

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

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?