Find the difference between 4/9 and -5/9

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis. how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Find the maximum value of p= 4x + 5y subject to the following constraints :