Answer:
A; C; D
Step-by-step explanation:
A. 4(2y-4x)-1
4(2x3-4x1/2)-1
4(6-2)-1
4(4)-1
16-1= 15
C. 4([tex]x^{2}[/tex]+1)+2x+3y
4([tex]1/2^{2}[/tex]+1)+2x1/2+3x3
4(0.25+1)+1+9
4(1.25)+10
5+10= 15
D. xy+ 3[tex]\frac{1}{2}[/tex] + 20x
1/2x3+3 1/2+20x1/2
1.5+3.5+10
5+10= 15
