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To use card A, the cost is $1.00 to connect and then $0.04 per minute. To use card B, it costs $0.65 to connect and then $0.06 per minute. For what number of minutes does it cost the same amount to use each card for a single call?

  • math -

    1 + .04m = .65 + .06m

    Subtract .04m and .65 from both sides of the equation

    .35 = .02m

    Solve for m by dividing .35 by .02.

  • math -

    17.5

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