a. V1(x)= 9x
V2(x)=21-3x
c.V1(x)=V2(x)
9x=21-3x
12x=21
x=21/12
x=1.75
d.V1(x)=2*V2(x)
9x=2*(21-3x)
9x=42-6x
15x=42
x=42/15
x=2.8
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a. V1(x)= 9x
V2(x)=21-3x
c.V1(x)=V2(x)
9x=21-3x
12x=21
x=21/12
x=1.75
d.V1(x)=2*V2(x)
9x=2*(21-3x)
9x=42-6x
15x=42
x=42/15
x=2.8