Math Practice 101
Homework Explained - Math Practice 101

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Grade 7 HMH Go Math - Answer Keys
Chapter 4: Rates and Proportionality; Lesson 2: Constant Rates of Change


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Information on three car-rental companies is given.

  • Question 5 (request help)

    Write an equation that gives the cost y of renting a car for x days from Rent-All.
  • y =     x
  • Question 6 (request help)

    What is the cost per day of renting a car from A-1?
  • $    per day
  • Question 7 (request help)

    Analyze Relationships

    Which company offers the best deal? Why?
  • The company that offers the best deal is    
  • Question 8 (request help)

    Critique Reasoning

    A skydiver jumps out of an airplane. After 0.8 second, she has fallen 100 feet. After 3.1 seconds, she has fallen 500 feet. Emtiaz says that the skydiver should fall about 187.5 feet in 1.5 seconds. Is his answer reasonable? Explain.
  •    

Steven earns extra money babysitting. He charges $31.25 for 5 hours and $50 for 8 hours.

  • Question 9 (request help)

    Explain why the relationship between how much Steven charges and time is a proportional relationship.
  • Type below:
  • Question 10 (request help)

    Interpret the Answer

    Explain what the constant rate of change means in the context.
  • Type below:
  • Question 11 (request help)

    Write an equation to represent the relationship. Tell what the variables represent.
  • Type below:
  • Question 12 (request help)

    How much would Steven charge for 3 hours?
  • $   

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