Math quiz

Simplify the following equation: (4x-3y+8xy)(4x+4xy-9x)
-1x-3y+12xy
1x+9xy-3y
3y+9xy-2x
-1x+9xy-5y
Juana walked in the morning x meters and in the afternoon he walked 200 meters the totalof these is 700.What is the correct equation
X-200=700 meters
X+200=700 meters
X+200=699
20+700=x
Plus the following polynomials: (9x-7xy+9y)+(4x-8x+7y+10yx)
8x+7xy-10y+11yx
9x-10xy+10yx
5x+7x-10yx+78
5x-7xy+16y+10yx
Pass that decimal to a percentage:0.5
50%
25%
5%
10%
Multiply the equation: (5x)(5y+7xy+8x)
25xy+35xyx+40x
20xy-40c+
D
D
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