A phone company charges a sign-up fee of $3.50, plus $x for every hour the phone is used. If Brian talked on the phone for 12 hours and paid a total of $75.50, which of the
following equations can be used to find, x, the hourly rate of the phone plan?

- (2, -7)

- lines r and s and lines t and u must be parallel

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y-3=-3/2(x+4)

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