Answer:
C.
The equation that represents this situation is -3x = 21. The second number is -7.
Step-by-step explanation:
First divide both sides by - 5,

Move the constant to the right side of the equation and change its sign (-4 => +4)

Add the numbers,

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I hope that helps you out!!
Any more questions, please feel free to ask me and I will gladly help you out!!
~Zoey
Answer:
12/5 or 2.4 cm³
Step-by-step explanation:
3*4/3*3/5=12/5 or 2.4 cm³
<em>shaded</em><em> </em><em>area</em><em> </em><em>=</em><em> </em><em>area</em><em> </em><em>of</em><em> </em><em>outer</em><em> </em><em>figure</em><em> </em><em>-</em><em> </em><em>area</em><em> </em><em>of</em><em> </em><em>inner</em><em> </em><em>figure</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>
300 miles is equal to 528,000 yards