slick43 slick43 Today at 5:28 AM Mathematics Answered Find the value of f(9) and g(-9)if f(x)=-7x-9 and g(x) =6x A. F(9)=-16 G(-9)=-760 B. F(9)=-54 G(-9)=16764 C. F(9)=-72 G(-9)=-4167 D. F(9)=63 G(-9)=54