Homework Explained - Math Practice 101

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Grade 8 HMH Go Math - Answer Keys
Chapter 7: Solving Linear Equations; Lesson 1:Equations with the Variable on Both Sides

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  • Question 12 (request help)

    The charges for an international call made using the calling card for two phone companies are shown in the table.

    a. What is the length of a phone call that would cost the same no matter which company is used?

  •     minutes
  • Question 12 (request help)

    b. Analyze Relationships

    When is it better to use the card from Company B?

  • Type below:


  Focus on Higher Order Thinking  

  • Question 13 (request help)

    Draw Conclusions

    Liam is setting up folding chairs for a meeting. If he arranges the chairs in 9 rows of the same length, he has 3 chairs left over. If he arranges the chairs in 7 rows of that same length, he has 19 left over. How many chairs does Liam have?

  •     chairs
  • Question 14 (request help)

    Explain the Error

    Rent-A-Tent rents party tents for a flat fee of $365 plus $125 a day. Capital Rentals rents party tents for a flat fee of $250 plus $175 a day. Delia wrote the following equation to find the number of days for which the total cost charged by the two companies would be the same:

                              \(365\text{x} + 125 = 250\text{x} + 175\)

    Find and explain the error in Delia’s work. Then write the correct equation.

  • Type below:
  • Question 15 (request help)

    Persevere in Problem Solving

    Lilliana is training for a marathon. She runs the same distance every day for a week. On Monday, Wednesday, and Friday, she runs 3 laps on a running trail and then runs 6 more miles.On Tuesday and Sunday, she runs 5 laps on the trail and then runs 2 more miles. On Saturday, she just runs laps. How many laps does Lilliana run on Saturday?

  •     laps

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