Question

Danielle owes $13.80 for text messaging in the month of March. If her text messaging plan costs $9 forthe first 550 messages and 20¢ for each additional text message, how many text messages did shesend that month?AnswerKeypadKeyboard Shortcutstext messages

Answer 1

Given

Danielle owes $13.80 for text messaging in the month of March.

If her text messaging plan costs $9 for the first 550 messages and 20¢ for each additional text message.

To find the number of text messages did she send that month.

Now,

Let x be the number of text messages she send that month.

Then, from the given data,

`x=550+(13.8-9)/(0.20)`

Since 20cents is $0.20.

Then,

`\begin{gathered} x=550+(13.8-9)/(20)*100 \\ =550+(4.8*100)/(20) \\ =550+4.8*5 \\ =550+24 \\ =574 \end{gathered}`

Hence, the number of text messages send by her is 574.