
At TelePower Plus, longdistance phone calls to China cost $0.59 for the first minute and $0.25 for each additional minute, plus an additional roaming charge of $2.50. If the total charge of a call to Beijing was $11.84, how many minutes did the call last?
At TelePower Plus, longdistance phone calls to China cost $0.59 for the first minute and $0.25 for each additional minute, plus an additional roaming charge of $2.50. If the total charge of a call to Beijing was $11.84, how many minutes did the call last?
Let "x" be the number of minutes.
11.84=0.59+0.25x+2.5.
11.840.592.5=2.5x.
2.5x=8.75.
x=8.75/2.5
=3.5 minutes.
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