What dose g(x) + (-g(x)) = supposed to equal?​

What rotation was applied to triangle def to create d’e’f’?

Can someone me with this graph problem by the way i need to know the answers by today since this assignment is due ! !

Round each of the decimals to the nearest hundredth a. 0.596 b. 4.245 c. 53.6843 d. 17.999