Can someone help me please

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x

Alogical argument that is presented in graphical form using boxes and arrows is called?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?