Whats the answer easy 20 points

Fred bought 3 cd’s for $16.50 is this multiplication division subtraction or addition

Which statement holds true for absolute value functions? •the absolute value determines the direction in which theb.the coefficient determines the line along which the graph,the distance between the left and the right arm is based od.the vertex coordinates and the absolute value determine 111

Solve the given system of equations. 2y= -x+9 , 3x-6= -15