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14.11.2019 •
Mathematics
Aphone company charges a flat rate of $15 to make phone calls for a month.they charge $0.10 per minute for each call made.if the want to make at least $60 from one customer,how many minutes do they have to talk
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Ответ:
450 minutes
Step-by-step explanation:
15 + 0.1x = 60
15 - 15 + 0.1x = 60 - 15
0.1x = 45
x = 450
Ответ:
Step-by-step explanation:
the answer is
(2x+13)=(3x-3)
x= 16