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..