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3 years ago

A cell phone plan costs $26.70 per month for 800 minutes of talk time. It costs an

Mathematics

1 answer:

cestrela7 [59]3 years ago

8 0

Answer: 264.33 + 0.05m = 291.33

Step-by-step explanation:

$26.70 a month for 800 minutes (multiply this by 9 as seen in the equation below since the bill is for 9 months)

$0.05 per additional minute (we don't know how many additional minutes were used so put an m as seen in the equation below)

email is 10% of $26.70 = $2.67 (multiply this by 9 as seen in the equation since the bill is for 9 months)

total bill is $291.33 for 9 months

put the values into an equation.

26.70(9) + 2.67(9) + 0.05m = 291.33

240.30 + 24.03 + 0.05m = 291.33

264.33 + 0.05m = 291.33

0.05m = 27

m = 540 total additional minutes

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