Mathematics, 05.02.2020 12:49, vanessa8527

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?

Answers: 1

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Suppose you make a 4-minute local call using a calling card and are charged 7.6 cents. the cost of a...