Suppose you make a 4-minute local call using a calling card and are charged 7.6 cents. The cost of a local call varies directly with the length of the call. How much more will it cost to make a 30-minute local call?
-Which quantity is the dependent quantity?
-How does the word "more" affect the method needed to solve the problem?

Question

Suppose you make a 4-minute local call using a calling card and are charged 7.6 cents. The cost of a local call varies directly with the length of the call. How much more will it cost to make a 30-minute local call?
-Which quantity is the dependent quantity?
-How does the word "more" affect the method needed to solve the problem?

aripotta · Answer

do you know the equation you need to use?