Alex purchased a 6-hour calling card.He has used t minutes of access time.Write an algebraic expression to represent how many minutes he has remaining and identify the units for the expression.

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Alex purchased a 6-hour calling card.He has used t minutes of access time.Write an algebraic expression to represent how many minutes he has remaining and identify the units for the expression.

360-t where t=minutes used

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It cost $20 per hour to bowl and $3 for shoe rental .Write a verbal model and algebraic expression to represent the cost for n hours and identify the units for the expressionâ€‹.