Posted by **Thomas** on Friday, May 30, 2014 at 1:52pm.

43. A phone company charges 10 cents per minute for the first 3 minutes of a call, and 10-cents for each minute thereafter.What is the cost, in cents, of a 10-minute phone call?

a. 200-20c

b.100c+70

c. 30+7c

d.100-7c

e. 100-70c

please answer and explain

- math - typo? -
**Ms. Sue**, Friday, May 30, 2014 at 1:58pm
Please proofread your problem.

- math -
**Thomas**, Friday, May 30, 2014 at 2:13pm
10 cents per minute for the first 3 minutes + 30 cents, but I don't know what is 10-cents for each minute thereafter?

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**Thomas**, Friday, May 30, 2014 at 2:14pm
type mistake:

10 cents per minute for the first 3 minutes = 30 cents

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**Thomas**, Friday, May 30, 2014 at 2:16pm
43. A phone company charges 10 cents per minute for the first 3 minutes of a call, and 10-c cents for each minute thereafter.What is the cost, in cents, of a 10-minute phone call?

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**Ms. Sue**, Friday, May 30, 2014 at 2:17pm
10 - 3 = 7

This problem doesn't make sense as the charge per minute is the same -- whether it's the first three minutes or the rest of the phone call.

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**Thomas**, Friday, May 30, 2014 at 2:18pm
10 cents per minute for the first 3 minutes = 30 cents ,but I don't know what is 10-c cents for each minute thereafter?

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**Thomas**, Friday, May 30, 2014 at 2:21pm
why -3 , because the first 3 minutes ?

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**Ms. Sue**, Friday, May 30, 2014 at 2:24pm
Yes.

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**Thomas**, Friday, May 30, 2014 at 2:37pm
is it answer c. 30 + 7c?

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**Ms. Sue**, Friday, May 30, 2014 at 2:40pm
What does c represent?

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