Answer:
B) 
Step-by-step explanation:
−x + 3 = 2x - 3
-2x - 2x
______________
−3x + 3 = −3
- 3 - 3
____________
−3x = −6
___ ___
−3 −3
[Plug this back into both equations above to get the y-coordinate of 1]; 
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Step-by-step explanation:
all the details are in the attachment; the solution are is filled with purple color.
Answer:
b= 322.8
Step-by-step explanation:
10.50a + 3.75b = 2071.50
10.50 (82) + 3.75b = 2071.50
861 + 3.75b = 2071.50
-861 -861
3.75b = 1210.5
/3.75 /3.75
b = 322.8
The best deal would be "three for the price of two" since buying one and 25 percent off would be 17.5 plus 10 for a third one is 27.5 compared to 20 for 3
Difference Of Two Squares
<span>a^2 - b^2 = a^2 - b^2
</span><span>so
x^2-64
=x^2 - 8^2
= (x + 8)(x - 8)</span>