Math Games

Archive for October, 2008

Math Games Answers 3a

This is the answer to the Math Games problem 3a

The answer to this problem is 7. There are seven ways to score 18.

The table below shows the seven ways to score 18.

The first way	9	5	4
The second way	9	6	3
The third way	8	6	4
The fourth way	8	5	5
The fifth way	9	9	0
The sixth way	8	8	2
The seventh way	6	6	6

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Question: Math question help plzz?

How do I calculate the variable cost for this partial relation
A bowling alley has a fixed base cost and charges a variable per game rate. It costs $20.50 for 5 games and $28.50 for 9 games.

What IS the variable cost?
It is $2 but HOW do you get it please explain

Answer: The equation looks like this:
Total Cost=(Variable Cost)(Number sold)+Variable Cost

So we can make two equations with what you gave:
20.50=V*5+F
28.50=V*9+F

We can solve for V by subtracting the equations:

8.00=V*4
V=2.00

So the variable cost is $2.00 per game. Now we can plug that in to one of the original equations to get the fixed cost:

20.50=(2.00)*5+F
F=10.50

So fixed cost is $10.50.

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