Math Practice 101
Homework Explained - Math Practice 101

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Grade 8 HMH Go Math - Answer Keys
Chapter 6: Functions; Lesson 3: Comparing Functions


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  Independent Practice  

The table and graph show the miles driven and gas used for two scooters.

  • Question 9 (request help)

    Which scooter uses fewer gallons of gas when 1350 miles are driven?
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  • Question 10 (request help)

    Are gas used and miles proportional or nonproportional for each scooter?
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A cell phone company offers two texting plans to its customers. The monthly cost, y dollars, of one plan is \(\text{y} = 0.10\text{x} + 5\), where x is the number of texts. The cost of the other plan is shown in the table.

  • Question 11 (request help)

    Which plan is cheaper for under 200 texts?
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  • Question 12 (request help)

    The graph of the first plan does not pass through the origin. What does this indicate?
  • Type below:
  • Question 13 (request help)

    Brianna wants to buy a digital camera for a photography class. One store offers the camera for $50 down and a payment plan of $20 per month. The payment plan for a second store is described by \(\text{y} = 15\text{x} + 80\), where y is the total cost in dollars and x is the number of months. Which camera is cheaper when the camera is paid off in 12 months? Explain.
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