Problema Solution
John pays $10 towards the initial cost of his phone plan plus an additional cost for sending each text message. He pays $10.70 in all for 7 text messages that he sent during this month including the initial cost.
How much does John pay for each text message sent from his phone?
Write an equation that represents the relationship between the number of messages sent, n and the monthly cost, c.
Answer provided by our tutors
Let 'x' represent the additional cost per text message sent.
The equation that represents the relationship between the number of messages sent, n and the monthly cost, c, is:
c = 10 + nx
He pays $10.70 in all for 7 text messages means:
10.70 = 10 + 7x
10 + 7x = 10.70
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click here to see the equation solved for x
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x = $0.10
John pays 10 cents for each text message sent.