How do u do constant rate of change i'm confused explain .

Which equation represents the model shown? a)1/3 divide 1/6 = 2 b)2/3 divide 1/6 = 2/18 c)1/3 divide 1/6 = 1/18 d)2/3 divide 1/6 =4

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

Find the quotient with the restriction.