⦁ Allegra has a cell-phone plan that charges $65 per month and $0.10 for every minute that she uses the phone beyond what her plan allows. One month, she was billed $73.40.
⦁ Define a variable for the unknown.
⦁ Write an equation to model the problem. Explain your answer.
⦁ Solve the equation. Show your work.
⦁ Find the number of minutes that Allegra went over the time that the plan allows. Explain your answer.

Question

⦁	Allegra has a cell-phone plan that charges $65 per month and $0.10 for every minute that she uses the phone beyond what her plan allows. One month, she was billed $73.40.
⦁	Define a variable for the unknown.
⦁	Write an equation to model the problem. Explain your answer.
⦁	Solve the equation. Show your work.
⦁	Find the number of minutes that Allegra went over the time that the plan allows. Explain your answer.

rushwr · Answer

1) Y is the no. of minutes exceeded.
2) $65 + ($0.1 x Y) = $73. 4
$65 + $0.1Y = $73.4

3) $0.1Y = $73.4 - $65 
 $0.1Y = $8.4
Y = $8.4/$0.1
Y = 84 
Allegra used 84 minutes more than what the plan gave.