# Math

Adrienne had a party at a local bowling alley. She spent seventy-five dollars for the lane and five dollars per person for shoes. Let c be the total cost of the lane and shoes, and let f be the number of friends at her party. Write an equation to represent the problem. Which is the dependent variable? Explain.

1. C = 75 + 5f.

C is the dependent variable. It depends on the value of f.

posted by Henry
2. c = 75 + 5 f

cost c depends on number of friends f

posted by Damon
3. This question could have been written another way around.
Lets see how many friends Adrienne is can spend 5 dollars on in addition to spending 75 on the rental for amount in her budget c

f = (c - 75)/5
NOW f depends on c
but the equation is really the same
5 f = c - 75
or
75+5f = c

posted by Damon

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