Homework Explained - Math Practice 101

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Grade 8 HMH Go Math - Answer Keys
Chapter 7: Solving Linear Equations; Model Quiz


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7.1 Equations with the Variable on Both Sides

Solve.

  • Question 3 (request help)

    Hue is arranging chairs. She can form 6 rows of a given length with 3 chairs left over, or 8 rows of that same length if she gets 11 more chairs. Write and solve an equation to find how many chairs are in that row length.

  •     chairs

7.2 Equations with Rational Numbers

Solve.

  • Question 4 (request help)

    \(\cfrac{2}{3}\text{n} – \cfrac{2}{3} = \cfrac{\text{n}}{6} + \cfrac{4}{3}\)

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  • Question 5 (request help)

    \(1.5\text{d} + 3.25 = 1 + 2.25\text{d}\)

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  • Question 6 (request help)

    Happy Paws charges $19.00 plus $1.50 per hour to keep a dog during the day. Woof Watchers charges $14.00 plus $2.75 per hour. Write and solve an equation to find for how many hours the total cost of the services is equal.

  •     hours

7.3 Equations with the Distributive Property

Solve.

  • Question 7 (request help)

    \(14 + 5\text{x} = 3(-\text{x} + 3) - 11\)

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  • Question 8 (request help)

    \(\cfrac{1}{4}(\text{x} - 7) = 1 + 3\text{x}\)

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  • Question 9 (request help)

    \(-5(2\text{x} - 9) = 2(\text{x} - 8) - 11\)

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7.4 Equations with Many Solutions or No Solution

Tell whether each equation has one, zero, or infinitely many solutions.

  • Question 12 (request help)

    \(5(\text{x} - 3) + 6 = 5\text{x} - 10\)

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