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Veseljchak [2.6K]
3 years ago
13

A phone company charges customers a monthly charge using the equation C = 40 + 0.3m, where is the monthly

Mathematics
1 answer:
insens350 [35]3 years ago
7 0

Option E

The person used the phone for 20 minutes that month

<em><u>Solution:</u></em>

Given that phone company charges customers a monthly charge using the equation:

C = 40 + 0.3m

Where,

"C" is the monthly charge in dollars

"m" is the number of minutes used by the customer

Someone's monthly charge is $46

To find: number of minutes used by that person

Therefore, given C = 46

Substitute C = 46 in given equation

46 = 40 + 0.3m

40 + 0.3m = 46

0.3m = 46 - 40

0.3m = 6

m = \frac{6}{0.3} = 20

Thus the person used the phone for 20 minutes that month

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