So if the main question is 9q x 3 it would equal 27q
A property of rectangles is that opposite sides are congruent. In this case, since QT and RS are opposite sides, they are equal to each other. With this knowledge, you can form the equation 
to solve for x.
Firstly, subtract both sides by 8: 
Next, divide both sides by 4 and your answer will be 
, or the third option.
Answer:
7×10³+3×10²+4×10¹+2×10 or 7.342×10³
When waves travel from one medium to another the frequency never changes. As waves travel into the denser medium, they slow down and wavelength decreases. Part of the wave travels faster for longer causing the wave to turn. The wave is slower but the wavelength is shorter meaning frequency remains the same
-100-70+100-30=-100
I included the value of the merchandise that she "purchased", so the owner lost $100 in total value.
