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A telephone call costs $0.15 for the first minute, plus $0.05 for each
additional minute. The total cost of the call was $1.30. This equation
can be used to find m, the length in minutes of the telephone call.
0.15 + 0.05(m - 1) = 1.30
Subtract .15 from both sides... .05(m-1) = 1.15 Divide both sides by .05... m-1 = 23 Add 1 to both sides... m = 24 There’s your answer, the call was 24 minutes long
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