The cost c varies directly as the number n of pencil is written as
A. k=cn B.n=kc C.c=k/n D.c=kn


Sagot :

Answer:

D. c = kn

Step-by-step explanation:

Varies directly means the relationship is direct and proportional. As the number of pencil increases/decreases, the cost will as well increase/decrease respectively.

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