Originally Posted by

**nataliesingh** Hello Friends,

I wonder if anybody helps me to solve this mathematic sum.. I solved it a bit but I could not sum it up .. here is the question

If the number of children attending the party is represented by x, explain in words why the linear equations y =9x +50 (for Playzone),

y =4x + 100 (for Kidzville) can be used to give the total cost y (in pounds) for each venue.

sol. y=9x + 50

y=4x + 100

after solving it we get

x = 10

Now I am bit confused about how to explain in words these why the linear equations can be used to give total cost y in each venue...

May be its very simple but I am too thick to get it..

plz help me out..

Thanks