SOLUTION: Please help me solve this. Use k as the constant of variation to write an equation to express each of the following relations. a) The distance (d) in kilometers covered by trai

Question 414593: Please help me solve this.
Use k as the constant of variation to write an equation to express each of the following relations.
a) The distance (d) in kilometers covered by train varies directly as its speed(s) in kilometer per hour.
b) The perimeter (P) of a regular pentagon varies directly as the length of a side(x).
c) THe commission (C) a salesman gets varies directly as the amount of his sales (S).
d) The circumference (C) of a circle varies directly as the diameter (d), What is the constant of variation?
Answer by Gogonati(855) (Show Source): You can put this solution on YOUR website!
a) d=k.s
b)P=5.x
c)C=k.s
d)k=Pi=3.14...
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