The equality used is Subtraction property of equality
Option A is correct
Step-by-step explanation:
We need to identify which option best explains or justifies Step 1.
Step 1 is: 
The given equation is: 
To get the equation for step 1 we need to subtract c on both sides of equation i.e using subtraction property of equality


So, The equality used is Subtraction property of equality
Option A is correct.
Keywords: Solving Quadratic Equations
Learn more about Solving Quadratic Equations at:
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:
The area.
She is trying to find how to cover it, which would be the area of the floor.
Y+3=1/4x-1/4
0.25x-y=3-0.25
0.25x-y=2.75
Literally just add it all up.
312.8+177.2+209=699 miles