Andrew sold $50 less than sarah did and evan sold $25 more than Sarah. these quantities can be communicated symbolically. if x=
the amount that sarah sold, which of these represents the amount sold by the other two people? A. andrew=50-x, Evan= x+25 B. Andrew=x-50, Evan=x+25 C. andrew=x-50, evan=25x D. andrew=50-x, evan=25x
X+y+5=0 y=-x-5 If a solution exists y=y so we can say x^2-9x+10=-x-5 add x+5 to both sides x^2-8x+15=0 now factor x^2-3x-5x+15=0 x(x-3)-5(x-3) (x-5)(x-3) so x=3 and 5, using y=-x-5 y(3)=-8 and y(5)=-10 So the two solutions are: (3,-8) and (5,-10)
