I am having trouble with these two questions . 1) -2+x= -x+2
2) 2+3x=x+7

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?

A11 gram sample of a substance that’s used to treat thyroid disorders has a k-value of 0.1247

How does percent markup and percent discount relate to percent of change?