math
posted by Thomas .
43. A phone company charges 10 cents per minute for the first 3 minutes of a call, and 10cents for each minute thereafter.What is the cost, in cents, of a 10minute phone call?
a. 20020c
b.100c+70
c. 30+7c
d.1007c
e. 10070c
please answer and explain

math  typo? 
Ms. Sue
Please proofread your problem.

math 
Thomas
10 cents per minute for the first 3 minutes + 30 cents, but I don't know what is 10cents for each minute thereafter?

math 
Thomas
type mistake:
10 cents per minute for the first 3 minutes = 30 cents 
math 
Thomas
43. A phone company charges 10 cents per minute for the first 3 minutes of a call, and 10c cents for each minute thereafter.What is the cost, in cents, of a 10minute phone call?

math 
Ms. Sue
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. 
math 
Thomas
10 cents per minute for the first 3 minutes = 30 cents ,but I don't know what is 10c cents for each minute thereafter?

math 
Thomas
why 3 , because the first 3 minutes ?

math 
Ms. Sue
Yes.

math 
Thomas
is it answer c. 30 + 7c?

math 
Ms. Sue
What does c represent?
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