What is the axis of symmetry of the graph of y = 4(x – 1)^2 – 3?
A.x = 1
B.x = –1
C. x = 3
D. x = 4
2. Jon’s new mini computer monitor has a 20 cm by 24 cm LCD screen with a plastic trim border. The total area of the monitor and border is 672 cm2. How wide is the trim around the monitor?
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Verified answer
answer to number 1 is :
4(x-1)(x-1)=
4(x^-1x-1x+1)=
4x^2-8x+4
-b/2a
8/2(4)=8/8=
1
[so its A ]