anonymous
  • anonymous
A long distance telephone company charges a rate of 6 cents per minute or a 50- cent minimum charge per completed call, whichever is greater. Find the costs, in cents per minute, for a 5 minute call. (ROUND TO A NEAREST TENTH OF A CENT)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
the equation is 6t + 50 = cost with t being time does that help?
anonymous
  • anonymous
t=minutes yes
anonymous
  • anonymous
huh still at loss

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More answers

anonymous
  • anonymous
80
anonymous
  • anonymous
hold on no the equation is wrong let me start from the top
mathstudent55
  • mathstudent55
If it costs 6 cents per minute, how much does a 5-minute call cost at that rate?
anonymous
  • anonymous
5(6*60)=cost
mathstudent55
  • mathstudent55
@dolloway97 If it costs 6 cents per minute, how much does a 5-minute call cost at that rate?
anonymous
  • anonymous
oh wow its per minute ive been reading it as per second this whole time
anonymous
  • anonymous
idk
anonymous
  • anonymous
30 is the cost
mathstudent55
  • mathstudent55
1 minute costs 6 cents 2 minutes cost 2 * 6 cents = 12 cents 3 minutes cost 3 * 6 cents = 18 cents What about 5 minutes?
anonymous
  • anonymous
5*6=?
anonymous
  • anonymous
i said 30
mathstudent55
  • mathstudent55
Right. At the rate 6 cents per minute, a 5-minute call would cost 30 cents. Now lets; read carefully the problem.
mathstudent55
  • mathstudent55
The problem states: "A long distance telephone company charges a rate of 6 cents per minute or a 50-cent minimum charge per completed call, whichever is greater."
mathstudent55
  • mathstudent55
From this part: "A long distance telephone company charges a rate of 6 cents per minute" you'd have a 30-cent charge for a 5-minute call, but from this part: "... or a 50-cent minimum charge per completed call, whichever is greater." you see that the company will never charge you less than 50 cents for any call. Since a 5-minute call is only 30 cents, the company charges the 50-cent minimum for it. That means a 5-minute call really costs 50 cents. Do you understand this?
anonymous
  • anonymous
but its 50 cents minimum charge per completed call
mathstudent55
  • mathstudent55
Right. That is why even though this call should have cost 30 cents, it really costs 50 cents. Any call that costs less than 50 cents has its price raised to 50 cents because of the 50-cent minimum charge the company has.
anonymous
  • anonymous
so since its 50 cents for a five minute call what was the sense in finding out 6x5=30
anonymous
  • anonymous
but its asking HOW MUCH DOES A 5 MIN CALL COST IN CENTS PER MINUTE
mathstudent55
  • mathstudent55
A great question. We needed to see if the charge was going to be the actual cost of the call or the minimum 50-cent charge. We needed to see whether 5 minutes at 6 cents per minute would by more or less than the 50-cent minimum. Once we multiplied 5 * 6 and got 30 cents, now we know we use the minimum charge and not eh 30-cent charge.
mathstudent55
  • mathstudent55
We're getting there. Now that we know the charge is 50 cents for a 5 minute call, we finish the problem.
mathstudent55
  • mathstudent55
Since the 5-minute call really cost 50 cents, now we can find the cost per minute for the 5-minute call: \(cost ~per ~minute = \dfrac{cost ~of ~the ~call}{number ~of ~minutes}\) \(cost ~per ~minute = \dfrac{50~cents}{5~minutes}\) What is 50/5 = ?
anonymous
  • anonymous
SO A 5 MINUTE CALL COSTS 50 CENTS PER MINUTE
anonymous
  • anonymous
50/5=10 @mathstudent55
mathstudent55
  • mathstudent55
Right. A 5-minute call costs 50 cents, and since 50 cents/5 minutes = 10, it costs 10 cents per minute.

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