Westonci.ca offers quick and accurate answers to your questions. Join our community and get the insights you need today. Ask your questions and receive accurate answers from professionals with extensive experience in various fields on our platform. Get quick and reliable solutions to your questions from a community of experienced experts on our platform.
Sagot :
Let's review the information given to us to answer the exercise correctly:
Amount in Melissa's prepaid card = $ 30
Price per minute of long distance calls = $ 0.21
Balance of Melissa's prepaid card = $ 21.81
Step 1: Write the equation to find the number of minutes Melissa used on her long distance call, as follows:
Let x to represent the number of of minutes Melissa used on her long distance call
Amount of prepaid card - Number of minutes Melissa talked = Balance of the prepaid card
Replacing with the values we know, we have:
30 - 0.21x = 21.81
Step 2: Solve for x
-0.21x = 21.81 - 30
-.021x = - 8.19
Dividing by -0.21 at both sides:
-0.21x/-0.21 = -8.19/-0.21
x = 39
Step 3: Interpret the result for x
Melissa used her phone card for 39 minutes
We hope this was helpful. Please come back whenever you need more information or answers to your queries. Thanks for using our service. We're always here to provide accurate and up-to-date answers to all your queries. We're glad you chose Westonci.ca. Revisit us for updated answers from our knowledgeable team.
