SOLUTION: when making a phone call using a calling card a call lasting 6 minutes cost $1.60. a call lasting 13 minutes cost $3.00. Y=cost and X=minutes. Write a linear equation.
predict h
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Question 745680: when making a phone call using a calling card a call lasting 6 minutes cost $1.60. a call lasting 13 minutes cost $3.00. Y=cost and X=minutes. Write a linear equation.
predict how much a 25 minute call cost?
Answer by tommyt3rd(5050) (Show Source): You can put this solution on YOUR website!
so using the first pair (6,1.6)
we'll write:
Y-1.6=0.2(X-6)
so a 25 minute call will cost...
$5.40
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